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Finding the Fourth Proportional to 6,613.88, 9,061.11 and 6,364.80

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Solution

The fourth proportional to 6,613.88, 9,061.11 and 6,364.80 is: 8,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.88 : 9,061.11 = 6,364.80 : x
  2. Step 2: Convert to fraction form
    6,613.88/9,061.11 = 6,364.80/x
  3. Step 3: Cross multiply
    6,613.88x = 9,061.11 × 6,364.80
  4. Step 4: Simplify right side
    6,613.88x = 57,672,152.93
  5. Step 5: Solve for x
    x = 57,672,152.93/6,613.88
  6. Step 6: Final answer
    x = 8,719.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.