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Finding the Fourth Proportional to 7,957.17, 10,981.26 and 4,420.40

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Solution

The fourth proportional to 7,957.17, 10,981.26 and 4,420.40 is: 6,100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.17 : 10,981.26 = 4,420.40 : x
  2. Step 2: Convert to fraction form
    7,957.17/10,981.26 = 4,420.40/x
  3. Step 3: Cross multiply
    7,957.17x = 10,981.26 × 4,420.40
  4. Step 4: Simplify right side
    7,957.17x = 48,541,506.80
  5. Step 5: Solve for x
    x = 48,541,506.80/7,957.17
  6. Step 6: Final answer
    x = 6,100.35

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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.