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Finding the Fourth Proportional to 7,808.80, 11,713.20 and 7,444.30

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Solution

The fourth proportional to 7,808.80, 11,713.20 and 7,444.30 is: 11,166.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.80 : 11,713.20 = 7,444.30 : x
  2. Step 2: Convert to fraction form
    7,808.80/11,713.20 = 7,444.30/x
  3. Step 3: Cross multiply
    7,808.80x = 11,713.20 × 7,444.30
  4. Step 4: Simplify right side
    7,808.80x = 87,196,574.76
  5. Step 5: Solve for x
    x = 87,196,574.76/7,808.80
  6. Step 6: Final answer
    x = 11,166.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.