Home / 1,655.12-2,284.25-991.73

Finding the Fourth Proportional to 1,655.12, 2,284.25 and 991.73

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Solution

The fourth proportional to 1,655.12, 2,284.25 and 991.73 is: 1,368.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.12 : 2,284.25 = 991.73 : x
  2. Step 2: Convert to fraction form
    1,655.12/2,284.25 = 991.73/x
  3. Step 3: Cross multiply
    1,655.12x = 2,284.25 × 991.73
  4. Step 4: Simplify right side
    1,655.12x = 2,265,342.87
  5. Step 5: Solve for x
    x = 2,265,342.87/1,655.12
  6. Step 6: Final answer
    x = 1,368.69

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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.