Home / 2,269.78-3,132.66-1,338.28

Finding the Fourth Proportional to 2,269.78, 3,132.66 and 1,338.28

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Solution

The fourth proportional to 2,269.78, 3,132.66 and 1,338.28 is: 1,847.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.78 : 3,132.66 = 1,338.28 : x
  2. Step 2: Convert to fraction form
    2,269.78/3,132.66 = 1,338.28/x
  3. Step 3: Cross multiply
    2,269.78x = 3,132.66 × 1,338.28
  4. Step 4: Simplify right side
    2,269.78x = 4,192,376.22
  5. Step 5: Solve for x
    x = 4,192,376.22/2,269.78
  6. Step 6: Final answer
    x = 1,847.04

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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.