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Finding the Fourth Proportional to 3,612.78, 4,988.02 and 2,419.29

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Solution

The fourth proportional to 3,612.78, 4,988.02 and 2,419.29 is: 3,340.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.78 : 4,988.02 = 2,419.29 : x
  2. Step 2: Convert to fraction form
    3,612.78/4,988.02 = 2,419.29/x
  3. Step 3: Cross multiply
    3,612.78x = 4,988.02 × 2,419.29
  4. Step 4: Simplify right side
    3,612.78x = 12,067,466.91
  5. Step 5: Solve for x
    x = 12,067,466.91/3,612.78
  6. Step 6: Final answer
    x = 3,340.22

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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.