Home / 2,280.32-3,147.85-1,691.87

Finding the Fourth Proportional to 2,280.32, 3,147.85 and 1,691.87

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Solution

The fourth proportional to 2,280.32, 3,147.85 and 1,691.87 is: 2,335.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.32 : 3,147.85 = 1,691.87 : x
  2. Step 2: Convert to fraction form
    2,280.32/3,147.85 = 1,691.87/x
  3. Step 3: Cross multiply
    2,280.32x = 3,147.85 × 1,691.87
  4. Step 4: Simplify right side
    2,280.32x = 5,325,739.36
  5. Step 5: Solve for x
    x = 5,325,739.36/2,280.32
  6. Step 6: Final answer
    x = 2,335.52

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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.