Home / 2,177.20-3,266.10-790.20

Finding the Fourth Proportional to 2,177.20, 3,266.10 and 790.20

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Solution

The fourth proportional to 2,177.20, 3,266.10 and 790.20 is: 1,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.20 : 3,266.10 = 790.20 : x
  2. Step 2: Convert to fraction form
    2,177.20/3,266.10 = 790.20/x
  3. Step 3: Cross multiply
    2,177.20x = 3,266.10 × 790.20
  4. Step 4: Simplify right side
    2,177.20x = 2,580,872.22
  5. Step 5: Solve for x
    x = 2,580,872.22/2,177.20
  6. Step 6: Final answer
    x = 1,185.41

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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.