Home / 1,948.28-2,687.46-1,248.44

Finding the Fourth Proportional to 1,948.28, 2,687.46 and 1,248.44

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Solution

The fourth proportional to 1,948.28, 2,687.46 and 1,248.44 is: 1,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.28 : 2,687.46 = 1,248.44 : x
  2. Step 2: Convert to fraction form
    1,948.28/2,687.46 = 1,248.44/x
  3. Step 3: Cross multiply
    1,948.28x = 2,687.46 × 1,248.44
  4. Step 4: Simplify right side
    1,948.28x = 3,355,132.56
  5. Step 5: Solve for x
    x = 3,355,132.56/1,948.28
  6. Step 6: Final answer
    x = 1,722.10

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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.