Home / 1,771.20-2,442.24-1,272.24

Finding the Fourth Proportional to 1,771.20, 2,442.24 and 1,272.24

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Solution

The fourth proportional to 1,771.20, 2,442.24 and 1,272.24 is: 1,754.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.20 : 2,442.24 = 1,272.24 : x
  2. Step 2: Convert to fraction form
    1,771.20/2,442.24 = 1,272.24/x
  3. Step 3: Cross multiply
    1,771.20x = 2,442.24 × 1,272.24
  4. Step 4: Simplify right side
    1,771.20x = 3,107,115.42
  5. Step 5: Solve for x
    x = 3,107,115.42/1,771.20
  6. Step 6: Final answer
    x = 1,754.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.