Home / 8,385.04-12,551.64-7,140.88

Finding the Fourth Proportional to 8,385.04, 12,551.64 and 7,140.88

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Solution

The fourth proportional to 8,385.04, 12,551.64 and 7,140.88 is: 10,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.04 : 12,551.64 = 7,140.88 : x
  2. Step 2: Convert to fraction form
    8,385.04/12,551.64 = 7,140.88/x
  3. Step 3: Cross multiply
    8,385.04x = 12,551.64 × 7,140.88
  4. Step 4: Simplify right side
    8,385.04x = 89,629,755.04
  5. Step 5: Solve for x
    x = 89,629,755.04/8,385.04
  6. Step 6: Final answer
    x = 10,689.25

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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.