Home / 5,108.28-7,660.43-1,987.85

Finding the Fourth Proportional to 5,108.28, 7,660.43 and 1,987.85

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Solution

The fourth proportional to 5,108.28, 7,660.43 and 1,987.85 is: 2,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.28 : 7,660.43 = 1,987.85 : x
  2. Step 2: Convert to fraction form
    5,108.28/7,660.43 = 1,987.85/x
  3. Step 3: Cross multiply
    5,108.28x = 7,660.43 × 1,987.85
  4. Step 4: Simplify right side
    5,108.28x = 15,227,802.44
  5. Step 5: Solve for x
    x = 15,227,802.44/5,108.28
  6. Step 6: Final answer
    x = 2,981.01

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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.