Home / 2,180.88-3,272.85-947.66

Finding the Fourth Proportional to 2,180.88, 3,272.85 and 947.66

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Solution

The fourth proportional to 2,180.88, 3,272.85 and 947.66 is: 1,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.88 : 3,272.85 = 947.66 : x
  2. Step 2: Convert to fraction form
    2,180.88/3,272.85 = 947.66/x
  3. Step 3: Cross multiply
    2,180.88x = 3,272.85 × 947.66
  4. Step 4: Simplify right side
    2,180.88x = 3,101,532.67
  5. Step 5: Solve for x
    x = 3,101,532.67/2,180.88
  6. Step 6: Final answer
    x = 1,422.15

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1.5x scale

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.