Home / 8,385.12-12,581.46-3,458.16

Finding the Fourth Proportional to 8,385.12, 12,581.46 and 3,458.16

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Solution

The fourth proportional to 8,385.12, 12,581.46 and 3,458.16 is: 5,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.12 : 12,581.46 = 3,458.16 : x
  2. Step 2: Convert to fraction form
    8,385.12/12,581.46 = 3,458.16/x
  3. Step 3: Cross multiply
    8,385.12x = 12,581.46 × 3,458.16
  4. Step 4: Simplify right side
    8,385.12x = 43,508,701.71
  5. Step 5: Solve for x
    x = 43,508,701.71/8,385.12
  6. Step 6: Final answer
    x = 5,188.80

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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.