Home / 8,613.20-12,920.07-3,066.46

Finding the Fourth Proportional to 8,613.20, 12,920.07 and 3,066.46

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Solution

The fourth proportional to 8,613.20, 12,920.07 and 3,066.46 is: 4,599.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.20 : 12,920.07 = 3,066.46 : x
  2. Step 2: Convert to fraction form
    8,613.20/12,920.07 = 3,066.46/x
  3. Step 3: Cross multiply
    8,613.20x = 12,920.07 × 3,066.46
  4. Step 4: Simplify right side
    8,613.20x = 39,618,813.25
  5. Step 5: Solve for x
    x = 39,618,813.25/8,613.20
  6. Step 6: Final answer
    x = 4,599.78

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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.