Home / 1,987.30-2,981.76-1,596.88

Finding the Fourth Proportional to 1,987.30, 2,981.76 and 1,596.88

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Solution

The fourth proportional to 1,987.30, 2,981.76 and 1,596.88 is: 2,395.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.30 : 2,981.76 = 1,596.88 : x
  2. Step 2: Convert to fraction form
    1,987.30/2,981.76 = 1,596.88/x
  3. Step 3: Cross multiply
    1,987.30x = 2,981.76 × 1,596.88
  4. Step 4: Simplify right side
    1,987.30x = 4,761,512.91
  5. Step 5: Solve for x
    x = 4,761,512.91/1,987.30
  6. Step 6: Final answer
    x = 2,395.97

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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.