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Finding the Fourth Proportional to 5,252.40, 7,871.18 and 2,913.44

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Solution

The fourth proportional to 5,252.40, 7,871.18 and 2,913.44 is: 4,366.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,252.40 : 7,871.18 = 2,913.44 : x
  2. Step 2: Convert to fraction form
    5,252.40/7,871.18 = 2,913.44/x
  3. Step 3: Cross multiply
    5,252.40x = 7,871.18 × 2,913.44
  4. Step 4: Simplify right side
    5,252.40x = 22,932,156.74
  5. Step 5: Solve for x
    x = 22,932,156.74/5,252.40
  6. Step 6: Final answer
    x = 4,366.03

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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.