Home / 2,487.24-3,432.78-1,439.64

Finding the Fourth Proportional to 2,487.24, 3,432.78 and 1,439.64

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Solution

The fourth proportional to 2,487.24, 3,432.78 and 1,439.64 is: 1,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.24 : 3,432.78 = 1,439.64 : x
  2. Step 2: Convert to fraction form
    2,487.24/3,432.78 = 1,439.64/x
  3. Step 3: Cross multiply
    2,487.24x = 3,432.78 × 1,439.64
  4. Step 4: Simplify right side
    2,487.24x = 4,941,967.40
  5. Step 5: Solve for x
    x = 4,941,967.40/2,487.24
  6. Step 6: Final answer
    x = 1,986.93

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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.