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Finding the Fourth Proportional to 8,613.49, 12,923.58 and 6,962.99

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Solution

The fourth proportional to 8,613.49, 12,923.58 and 6,962.99 is: 10,447.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.49 : 12,923.58 = 6,962.99 : x
  2. Step 2: Convert to fraction form
    8,613.49/12,923.58 = 6,962.99/x
  3. Step 3: Cross multiply
    8,613.49x = 12,923.58 × 6,962.99
  4. Step 4: Simplify right side
    8,613.49x = 89,986,693.69
  5. Step 5: Solve for x
    x = 89,986,693.69/8,613.49
  6. Step 6: Final answer
    x = 10,447.19

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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.