Home / 3,881.10-5,349.68-2,974.70

Finding the Fourth Proportional to 3,881.10, 5,349.68 and 2,974.70

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Solution

The fourth proportional to 3,881.10, 5,349.68 and 2,974.70 is: 4,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.10 : 5,349.68 = 2,974.70 : x
  2. Step 2: Convert to fraction form
    3,881.10/5,349.68 = 2,974.70/x
  3. Step 3: Cross multiply
    3,881.10x = 5,349.68 × 2,974.70
  4. Step 4: Simplify right side
    3,881.10x = 15,913,693.10
  5. Step 5: Solve for x
    x = 15,913,693.10/3,881.10
  6. Step 6: Final answer
    x = 4,100.30

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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.