Home / 5,101.32-7,650.36-1,981.11

Finding the Fourth Proportional to 5,101.32, 7,650.36 and 1,981.11

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Solution

The fourth proportional to 5,101.32, 7,650.36 and 1,981.11 is: 2,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.32 : 7,650.36 = 1,981.11 : x
  2. Step 2: Convert to fraction form
    5,101.32/7,650.36 = 1,981.11/x
  3. Step 3: Cross multiply
    5,101.32x = 7,650.36 × 1,981.11
  4. Step 4: Simplify right side
    5,101.32x = 15,156,204.70
  5. Step 5: Solve for x
    x = 15,156,204.70/5,101.32
  6. Step 6: Final answer
    x = 2,971.04

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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.