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Finding the Fourth Proportional to 6,515.80, 9,773.70 and 6,285.40

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Solution

The fourth proportional to 6,515.80, 9,773.70 and 6,285.40 is: 9,428.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.80 : 9,773.70 = 6,285.40 : x
  2. Step 2: Convert to fraction form
    6,515.80/9,773.70 = 6,285.40/x
  3. Step 3: Cross multiply
    6,515.80x = 9,773.70 × 6,285.40
  4. Step 4: Simplify right side
    6,515.80x = 61,431,613.98
  5. Step 5: Solve for x
    x = 61,431,613.98/6,515.80
  6. Step 6: Final answer
    x = 9,428.10

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Half 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.