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Finding the Fourth Proportional to 8,782.77, 12,122.36 and 7,364.19

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Solution

The fourth proportional to 8,782.77, 12,122.36 and 7,364.19 is: 10,164.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.77 : 12,122.36 = 7,364.19 : x
  2. Step 2: Convert to fraction form
    8,782.77/12,122.36 = 7,364.19/x
  3. Step 3: Cross multiply
    8,782.77x = 12,122.36 × 7,364.19
  4. Step 4: Simplify right side
    8,782.77x = 89,271,362.29
  5. Step 5: Solve for x
    x = 89,271,362.29/8,782.77
  6. Step 6: Final answer
    x = 10,164.37

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Half scale
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Double scale
Find fourth proportional to 8,783.77, 12,123.74 and 7,365.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.