Home / 3,948.83-5,449.32-2,180.39

Finding the Fourth Proportional to 3,948.83, 5,449.32 and 2,180.39

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Solution

The fourth proportional to 3,948.83, 5,449.32 and 2,180.39 is: 3,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.83 : 5,449.32 = 2,180.39 : x
  2. Step 2: Convert to fraction form
    3,948.83/5,449.32 = 2,180.39/x
  3. Step 3: Cross multiply
    3,948.83x = 5,449.32 × 2,180.39
  4. Step 4: Simplify right side
    3,948.83x = 11,881,642.83
  5. Step 5: Solve for x
    x = 11,881,642.83/3,948.83
  6. Step 6: Final answer
    x = 3,008.90

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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.