Home / 3,948.91-5,449.47-2,180.50

Finding the Fourth Proportional to 3,948.91, 5,449.47 and 2,180.50

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Solution

The fourth proportional to 3,948.91, 5,449.47 and 2,180.50 is: 3,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.91 : 5,449.47 = 2,180.50 : x
  2. Step 2: Convert to fraction form
    3,948.91/5,449.47 = 2,180.50/x
  3. Step 3: Cross multiply
    3,948.91x = 5,449.47 × 2,180.50
  4. Step 4: Simplify right side
    3,948.91x = 11,882,569.34
  5. Step 5: Solve for x
    x = 11,882,569.34/3,948.91
  6. Step 6: Final answer
    x = 3,009.08

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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.