Home / 1,772.12-2,655.14-1,251.20

Finding the Fourth Proportional to 1,772.12, 2,655.14 and 1,251.20

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Solution

The fourth proportional to 1,772.12, 2,655.14 and 1,251.20 is: 1,874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.12 : 2,655.14 = 1,251.20 : x
  2. Step 2: Convert to fraction form
    1,772.12/2,655.14 = 1,251.20/x
  3. Step 3: Cross multiply
    1,772.12x = 2,655.14 × 1,251.20
  4. Step 4: Simplify right side
    1,772.12x = 3,322,091.64
  5. Step 5: Solve for x
    x = 3,322,091.64/1,772.12
  6. Step 6: Final answer
    x = 1,874.65

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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.