Home / 2,487.12-3,432.60-1,439.36

Finding the Fourth Proportional to 2,487.12, 3,432.60 and 1,439.36

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Solution

The fourth proportional to 2,487.12, 3,432.60 and 1,439.36 is: 1,986.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.12 : 3,432.60 = 1,439.36 : x
  2. Step 2: Convert to fraction form
    2,487.12/3,432.60 = 1,439.36/x
  3. Step 3: Cross multiply
    2,487.12x = 3,432.60 × 1,439.36
  4. Step 4: Simplify right side
    2,487.12x = 4,940,747.14
  5. Step 5: Solve for x
    x = 4,940,747.14/2,487.12
  6. Step 6: Final answer
    x = 1,986.53

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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.