Home / 2,122.02-3,182.52-660.78

Finding the Fourth Proportional to 2,122.02, 3,182.52 and 660.78

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Solution

The fourth proportional to 2,122.02, 3,182.52 and 660.78 is: 991.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.02 : 3,182.52 = 660.78 : x
  2. Step 2: Convert to fraction form
    2,122.02/3,182.52 = 660.78/x
  3. Step 3: Cross multiply
    2,122.02x = 3,182.52 × 660.78
  4. Step 4: Simplify right side
    2,122.02x = 2,102,945.57
  5. Step 5: Solve for x
    x = 2,102,945.57/2,122.02
  6. Step 6: Final answer
    x = 991.01

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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.