Home / 9,158.22-12,638.80-5,381.60

Finding the Fourth Proportional to 9,158.22, 12,638.80 and 5,381.60

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Solution

The fourth proportional to 9,158.22, 12,638.80 and 5,381.60 is: 7,426.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.22 : 12,638.80 = 5,381.60 : x
  2. Step 2: Convert to fraction form
    9,158.22/12,638.80 = 5,381.60/x
  3. Step 3: Cross multiply
    9,158.22x = 12,638.80 × 5,381.60
  4. Step 4: Simplify right side
    9,158.22x = 68,016,966.08
  5. Step 5: Solve for x
    x = 68,016,966.08/9,158.22
  6. Step 6: Final answer
    x = 7,426.88

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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.