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Finding the Fourth Proportional to 5,276.70, 7,915.03 and 2,158.16

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Solution

The fourth proportional to 5,276.70, 7,915.03 and 2,158.16 is: 3,237.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.70 : 7,915.03 = 2,158.16 : x
  2. Step 2: Convert to fraction form
    5,276.70/7,915.03 = 2,158.16/x
  3. Step 3: Cross multiply
    5,276.70x = 7,915.03 × 2,158.16
  4. Step 4: Simplify right side
    5,276.70x = 17,081,856.17
  5. Step 5: Solve for x
    x = 17,081,856.17/5,276.70
  6. Step 6: Final answer
    x = 3,237.22

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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.