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Finding the Fourth Proportional to 5,371.55, 7,412.62 and 2,981.38

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Solution

The fourth proportional to 5,371.55, 7,412.62 and 2,981.38 is: 4,114.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,371.55 : 7,412.62 = 2,981.38 : x
  2. Step 2: Convert to fraction form
    5,371.55/7,412.62 = 2,981.38/x
  3. Step 3: Cross multiply
    5,371.55x = 7,412.62 × 2,981.38
  4. Step 4: Simplify right side
    5,371.55x = 22,099,850.01
  5. Step 5: Solve for x
    x = 22,099,850.01/5,371.55
  6. Step 6: Final answer
    x = 4,114.24

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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.