Home / 1,587.60-2,189.84-1,255.50

Finding the Fourth Proportional to 1,587.60, 2,189.84 and 1,255.50

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Solution

The fourth proportional to 1,587.60, 2,189.84 and 1,255.50 is: 1,731.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.60 : 2,189.84 = 1,255.50 : x
  2. Step 2: Convert to fraction form
    1,587.60/2,189.84 = 1,255.50/x
  3. Step 3: Cross multiply
    1,587.60x = 2,189.84 × 1,255.50
  4. Step 4: Simplify right side
    1,587.60x = 2,749,337.84
  5. Step 5: Solve for x
    x = 2,749,337.84/1,587.60
  6. Step 6: Final answer
    x = 1,731.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.