Home / 3,125.61-4,689.86-1,587.69

Finding the Fourth Proportional to 3,125.61, 4,689.86 and 1,587.69

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Solution

The fourth proportional to 3,125.61, 4,689.86 and 1,587.69 is: 2,382.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.61 : 4,689.86 = 1,587.69 : x
  2. Step 2: Convert to fraction form
    3,125.61/4,689.86 = 1,587.69/x
  3. Step 3: Cross multiply
    3,125.61x = 4,689.86 × 1,587.69
  4. Step 4: Simplify right side
    3,125.61x = 7,446,035.88
  5. Step 5: Solve for x
    x = 7,446,035.88/3,125.61
  6. Step 6: Final answer
    x = 2,382.27

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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.