Home / 5,276.74-7,915.11-1,381.13

Finding the Fourth Proportional to 5,276.74, 7,915.11 and 1,381.13

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Solution

The fourth proportional to 5,276.74, 7,915.11 and 1,381.13 is: 2,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.74 : 7,915.11 = 1,381.13 : x
  2. Step 2: Convert to fraction form
    5,276.74/7,915.11 = 1,381.13/x
  3. Step 3: Cross multiply
    5,276.74x = 7,915.11 × 1,381.13
  4. Step 4: Simplify right side
    5,276.74x = 10,931,788.97
  5. Step 5: Solve for x
    x = 10,931,788.97/5,276.74
  6. Step 6: Final answer
    x = 2,071.70

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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.