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Finding the Fourth Proportional to 3,612.92, 4,977.90 and 2,431.94

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Solution

The fourth proportional to 3,612.92, 4,977.90 and 2,431.94 is: 3,350.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.92 : 4,977.90 = 2,431.94 : x
  2. Step 2: Convert to fraction form
    3,612.92/4,977.90 = 2,431.94/x
  3. Step 3: Cross multiply
    3,612.92x = 4,977.90 × 2,431.94
  4. Step 4: Simplify right side
    3,612.92x = 12,105,929.24
  5. Step 5: Solve for x
    x = 12,105,929.24/3,612.92
  6. Step 6: Final answer
    x = 3,350.74

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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.