Home / 3,125.30-4,689.99-1,276.61

Finding the Fourth Proportional to 3,125.30, 4,689.99 and 1,276.61

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Solution

The fourth proportional to 3,125.30, 4,689.99 and 1,276.61 is: 1,915.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.30 : 4,689.99 = 1,276.61 : x
  2. Step 2: Convert to fraction form
    3,125.30/4,689.99 = 1,276.61/x
  3. Step 3: Cross multiply
    3,125.30x = 4,689.99 × 1,276.61
  4. Step 4: Simplify right side
    3,125.30x = 5,987,264.68
  5. Step 5: Solve for x
    x = 5,987,264.68/3,125.30
  6. Step 6: Final answer
    x = 1,915.74

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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.