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Finding the Fourth Proportional to 3,487.12, 4,815.60 and 2,492.40

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Solution

The fourth proportional to 3,487.12, 4,815.60 and 2,492.40 is: 3,441.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.12 : 4,815.60 = 2,492.40 : x
  2. Step 2: Convert to fraction form
    3,487.12/4,815.60 = 2,492.40/x
  3. Step 3: Cross multiply
    3,487.12x = 4,815.60 × 2,492.40
  4. Step 4: Simplify right side
    3,487.12x = 12,002,401.44
  5. Step 5: Solve for x
    x = 12,002,401.44/3,487.12
  6. Step 6: Final answer
    x = 3,441.92

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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.