Home / 1,356.88-2,031.80-1,163.12

Finding the Fourth Proportional to 1,356.88, 2,031.80 and 1,163.12

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Solution

The fourth proportional to 1,356.88, 2,031.80 and 1,163.12 is: 1,741.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.88 : 2,031.80 = 1,163.12 : x
  2. Step 2: Convert to fraction form
    1,356.88/2,031.80 = 1,163.12/x
  3. Step 3: Cross multiply
    1,356.88x = 2,031.80 × 1,163.12
  4. Step 4: Simplify right side
    1,356.88x = 2,363,221.40
  5. Step 5: Solve for x
    x = 2,363,221.40/1,356.88
  6. Step 6: Final answer
    x = 1,741.66

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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.