Home / 3,107.17-4,659.15-915.62

Finding the Fourth Proportional to 3,107.17, 4,659.15 and 915.62

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Solution

The fourth proportional to 3,107.17, 4,659.15 and 915.62 is: 1,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.17 : 4,659.15 = 915.62 : x
  2. Step 2: Convert to fraction form
    3,107.17/4,659.15 = 915.62/x
  3. Step 3: Cross multiply
    3,107.17x = 4,659.15 × 915.62
  4. Step 4: Simplify right side
    3,107.17x = 4,266,010.92
  5. Step 5: Solve for x
    x = 4,266,010.92/3,107.17
  6. Step 6: Final answer
    x = 1,372.96

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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.