Home / 1,292.20-1,937.75-881.66

Finding the Fourth Proportional to 1,292.20, 1,937.75 and 881.66

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Solution

The fourth proportional to 1,292.20, 1,937.75 and 881.66 is: 1,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.20 : 1,937.75 = 881.66 : x
  2. Step 2: Convert to fraction form
    1,292.20/1,937.75 = 881.66/x
  3. Step 3: Cross multiply
    1,292.20x = 1,937.75 × 881.66
  4. Step 4: Simplify right side
    1,292.20x = 1,708,436.67
  5. Step 5: Solve for x
    x = 1,708,436.67/1,292.20
  6. Step 6: Final answer
    x = 1,322.11

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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.