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Finding the Fourth Proportional to 5,363.78, 7,402.88 and 3,126.97

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Solution

The fourth proportional to 5,363.78, 7,402.88 and 3,126.97 is: 4,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,363.78 : 7,402.88 = 3,126.97 : x
  2. Step 2: Convert to fraction form
    5,363.78/7,402.88 = 3,126.97/x
  3. Step 3: Cross multiply
    5,363.78x = 7,402.88 × 3,126.97
  4. Step 4: Simplify right side
    5,363.78x = 23,148,531.02
  5. Step 5: Solve for x
    x = 23,148,531.02/5,363.78
  6. Step 6: Final answer
    x = 4,315.71

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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.