Home / 9,120.60-12,587.04-5,141.88

Finding the Fourth Proportional to 9,120.60, 12,587.04 and 5,141.88

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Solution

The fourth proportional to 9,120.60, 12,587.04 and 5,141.88 is: 7,096.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.60 : 12,587.04 = 5,141.88 : x
  2. Step 2: Convert to fraction form
    9,120.60/12,587.04 = 5,141.88/x
  3. Step 3: Cross multiply
    9,120.60x = 12,587.04 × 5,141.88
  4. Step 4: Simplify right side
    9,120.60x = 64,721,049.24
  5. Step 5: Solve for x
    x = 64,721,049.24/9,120.60
  6. Step 6: Final answer
    x = 7,096.14

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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.