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Finding the Fourth Proportional to 8,613.58, 12,920.68 and 2,374.08

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Solution

The fourth proportional to 8,613.58, 12,920.68 and 2,374.08 is: 3,561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.58 : 12,920.68 = 2,374.08 : x
  2. Step 2: Convert to fraction form
    8,613.58/12,920.68 = 2,374.08/x
  3. Step 3: Cross multiply
    8,613.58x = 12,920.68 × 2,374.08
  4. Step 4: Simplify right side
    8,613.58x = 30,674,727.97
  5. Step 5: Solve for x
    x = 30,674,727.97/8,613.58
  6. Step 6: Final answer
    x = 3,561.21

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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.