Home / 3,432.79-5,136.88-2,972.15

Finding the Fourth Proportional to 3,432.79, 5,136.88 and 2,972.15

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Solution

The fourth proportional to 3,432.79, 5,136.88 and 2,972.15 is: 4,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.79 : 5,136.88 = 2,972.15 : x
  2. Step 2: Convert to fraction form
    3,432.79/5,136.88 = 2,972.15/x
  3. Step 3: Cross multiply
    3,432.79x = 5,136.88 × 2,972.15
  4. Step 4: Simplify right side
    3,432.79x = 15,267,577.89
  5. Step 5: Solve for x
    x = 15,267,577.89/3,432.79
  6. Step 6: Final answer
    x = 4,447.57

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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.