Home / 2,487.42-3,432.26-1,439.28

Finding the Fourth Proportional to 2,487.42, 3,432.26 and 1,439.28

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Solution

The fourth proportional to 2,487.42, 3,432.26 and 1,439.28 is: 1,985.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.42 : 3,432.26 = 1,439.28 : x
  2. Step 2: Convert to fraction form
    2,487.42/3,432.26 = 1,439.28/x
  3. Step 3: Cross multiply
    2,487.42x = 3,432.26 × 1,439.28
  4. Step 4: Simplify right side
    2,487.42x = 4,939,983.17
  5. Step 5: Solve for x
    x = 4,939,983.17/2,487.42
  6. Step 6: Final answer
    x = 1,985.99

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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.