Home / 9,122.60-12,589.06-5,143.72

Finding the Fourth Proportional to 9,122.60, 12,589.06 and 5,143.72

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Solution

The fourth proportional to 9,122.60, 12,589.06 and 5,143.72 is: 7,098.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.60 : 12,589.06 = 5,143.72 : x
  2. Step 2: Convert to fraction form
    9,122.60/12,589.06 = 5,143.72/x
  3. Step 3: Cross multiply
    9,122.60x = 12,589.06 × 5,143.72
  4. Step 4: Simplify right side
    9,122.60x = 64,754,599.70
  5. Step 5: Solve for x
    x = 64,754,599.70/9,122.60
  6. Step 6: Final answer
    x = 7,098.26

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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.