Home / 2,138.39-2,948.23-1,753.70

Finding the Fourth Proportional to 2,138.39, 2,948.23 and 1,753.70

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Solution

The fourth proportional to 2,138.39, 2,948.23 and 1,753.70 is: 2,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.39 : 2,948.23 = 1,753.70 : x
  2. Step 2: Convert to fraction form
    2,138.39/2,948.23 = 1,753.70/x
  3. Step 3: Cross multiply
    2,138.39x = 2,948.23 × 1,753.70
  4. Step 4: Simplify right side
    2,138.39x = 5,170,287.44
  5. Step 5: Solve for x
    x = 5,170,287.44/2,138.39
  6. Step 6: Final answer
    x = 2,417.85

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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.