Home / 3,718.31-5,578.30-2,159.61

Finding the Fourth Proportional to 3,718.31, 5,578.30 and 2,159.61

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Solution

The fourth proportional to 3,718.31, 5,578.30 and 2,159.61 is: 3,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.31 : 5,578.30 = 2,159.61 : x
  2. Step 2: Convert to fraction form
    3,718.31/5,578.30 = 2,159.61/x
  3. Step 3: Cross multiply
    3,718.31x = 5,578.30 × 2,159.61
  4. Step 4: Simplify right side
    3,718.31x = 12,046,934.24
  5. Step 5: Solve for x
    x = 12,046,934.24/3,718.31
  6. Step 6: Final answer
    x = 3,239.90

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1.5x scale

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.