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Finding the Fourth Proportional to 6,613.74, 9,134.98 and 4,818.38

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Solution

The fourth proportional to 6,613.74, 9,134.98 and 4,818.38 is: 6,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.74 : 9,134.98 = 4,818.38 : x
  2. Step 2: Convert to fraction form
    6,613.74/9,134.98 = 4,818.38/x
  3. Step 3: Cross multiply
    6,613.74x = 9,134.98 × 4,818.38
  4. Step 4: Simplify right side
    6,613.74x = 44,015,747.21
  5. Step 5: Solve for x
    x = 44,015,747.21/6,613.74
  6. Step 6: Final answer
    x = 6,655.20

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Half scale
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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.