Home / 2,587.60-3,881.90-1,028.35

Finding the Fourth Proportional to 2,587.60, 3,881.90 and 1,028.35

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Solution

The fourth proportional to 2,587.60, 3,881.90 and 1,028.35 is: 1,542.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.60 : 3,881.90 = 1,028.35 : x
  2. Step 2: Convert to fraction form
    2,587.60/3,881.90 = 1,028.35/x
  3. Step 3: Cross multiply
    2,587.60x = 3,881.90 × 1,028.35
  4. Step 4: Simplify right side
    2,587.60x = 3,991,951.87
  5. Step 5: Solve for x
    x = 3,991,951.87/2,587.60
  6. Step 6: Final answer
    x = 1,542.72

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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.