Home / 2,108.55-3,162.83-1,248.33

Finding the Fourth Proportional to 2,108.55, 3,162.83 and 1,248.33

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Solution

The fourth proportional to 2,108.55, 3,162.83 and 1,248.33 is: 1,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.55 : 3,162.83 = 1,248.33 : x
  2. Step 2: Convert to fraction form
    2,108.55/3,162.83 = 1,248.33/x
  3. Step 3: Cross multiply
    2,108.55x = 3,162.83 × 1,248.33
  4. Step 4: Simplify right side
    2,108.55x = 3,948,255.57
  5. Step 5: Solve for x
    x = 3,948,255.57/2,108.55
  6. Step 6: Final answer
    x = 1,872.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.