Home / 9,130.28-12,577.92-8,685.60

Finding the Fourth Proportional to 9,130.28, 12,577.92 and 8,685.60

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Solution

The fourth proportional to 9,130.28, 12,577.92 and 8,685.60 is: 11,965.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.28 : 12,577.92 = 8,685.60 : x
  2. Step 2: Convert to fraction form
    9,130.28/12,577.92 = 8,685.60/x
  3. Step 3: Cross multiply
    9,130.28x = 12,577.92 × 8,685.60
  4. Step 4: Simplify right side
    9,130.28x = 109,246,781.95
  5. Step 5: Solve for x
    x = 109,246,781.95/9,130.28
  6. Step 6: Final answer
    x = 11,965.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.