Home / 2,221.32-3,331.26-760.08

Finding the Fourth Proportional to 2,221.32, 3,331.26 and 760.08

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Solution

The fourth proportional to 2,221.32, 3,331.26 and 760.08 is: 1,139.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.32 : 3,331.26 = 760.08 : x
  2. Step 2: Convert to fraction form
    2,221.32/3,331.26 = 760.08/x
  3. Step 3: Cross multiply
    2,221.32x = 3,331.26 × 760.08
  4. Step 4: Simplify right side
    2,221.32x = 2,532,024.10
  5. Step 5: Solve for x
    x = 2,532,024.10/2,221.32
  6. Step 6: Final answer
    x = 1,139.87

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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.