Home / 2,382.92-3,287.90-1,438.87

Finding the Fourth Proportional to 2,382.92, 3,287.90 and 1,438.87

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Solution

The fourth proportional to 2,382.92, 3,287.90 and 1,438.87 is: 1,985.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.92 : 3,287.90 = 1,438.87 : x
  2. Step 2: Convert to fraction form
    2,382.92/3,287.90 = 1,438.87/x
  3. Step 3: Cross multiply
    2,382.92x = 3,287.90 × 1,438.87
  4. Step 4: Simplify right side
    2,382.92x = 4,730,856.05
  5. Step 5: Solve for x
    x = 4,730,856.05/2,382.92
  6. Step 6: Final answer
    x = 1,985.32

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1.5x scale

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.