Home / 2,299.12-3,172.80-1,251.19

Finding the Fourth Proportional to 2,299.12, 3,172.80 and 1,251.19

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Solution

The fourth proportional to 2,299.12, 3,172.80 and 1,251.19 is: 1,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.12 : 3,172.80 = 1,251.19 : x
  2. Step 2: Convert to fraction form
    2,299.12/3,172.80 = 1,251.19/x
  3. Step 3: Cross multiply
    2,299.12x = 3,172.80 × 1,251.19
  4. Step 4: Simplify right side
    2,299.12x = 3,969,753.51
  5. Step 5: Solve for x
    x = 3,969,753.51/2,299.12
  6. Step 6: Final answer
    x = 1,726.64

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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.