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Finding the Fourth Proportional to 7,117.70, 10,676.55 and 6,753.20

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Solution

The fourth proportional to 7,117.70, 10,676.55 and 6,753.20 is: 10,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.70 : 10,676.55 = 6,753.20 : x
  2. Step 2: Convert to fraction form
    7,117.70/10,676.55 = 6,753.20/x
  3. Step 3: Cross multiply
    7,117.70x = 10,676.55 × 6,753.20
  4. Step 4: Simplify right side
    7,117.70x = 72,100,877.46
  5. Step 5: Solve for x
    x = 72,100,877.46/7,117.70
  6. Step 6: Final answer
    x = 10,129.80

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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.