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Finding the Fourth Proportional to 8,983, 12,388.42 and 7,069.64

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Solution

The fourth proportional to 8,983, 12,388.42 and 7,069.64 is: 9,749.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,983 : 12,388.42 = 7,069.64 : x
  2. Step 2: Convert to fraction form
    8,983/12,388.42 = 7,069.64/x
  3. Step 3: Cross multiply
    8,983x = 12,388.42 × 7,069.64
  4. Step 4: Simplify right side
    8,983x = 87,581,669.57
  5. Step 5: Solve for x
    x = 87,581,669.57/8,983
  6. Step 6: Final answer
    x = 9,749.71

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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.