Home / 3,927.80-5,890.98-1,587.68

Finding the Fourth Proportional to 3,927.80, 5,890.98 and 1,587.68

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Solution

The fourth proportional to 3,927.80, 5,890.98 and 1,587.68 is: 2,381.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.80 : 5,890.98 = 1,587.68 : x
  2. Step 2: Convert to fraction form
    3,927.80/5,890.98 = 1,587.68/x
  3. Step 3: Cross multiply
    3,927.80x = 5,890.98 × 1,587.68
  4. Step 4: Simplify right side
    3,927.80x = 9,352,991.13
  5. Step 5: Solve for x
    x = 9,352,991.13/3,927.80
  6. Step 6: Final answer
    x = 2,381.23

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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.