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Finding the Fourth Proportional to 5,339.68, 7,367.88 and 2,981.44

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Solution

The fourth proportional to 5,339.68, 7,367.88 and 2,981.44 is: 4,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,339.68 : 7,367.88 = 2,981.44 : x
  2. Step 2: Convert to fraction form
    5,339.68/7,367.88 = 2,981.44/x
  3. Step 3: Cross multiply
    5,339.68x = 7,367.88 × 2,981.44
  4. Step 4: Simplify right side
    5,339.68x = 21,966,892.15
  5. Step 5: Solve for x
    x = 21,966,892.15/5,339.68
  6. Step 6: Final answer
    x = 4,113.90

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1.5x scale

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.