Home / 2,147.26-3,221.14-760.30

Finding the Fourth Proportional to 2,147.26, 3,221.14 and 760.30

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Solution

The fourth proportional to 2,147.26, 3,221.14 and 760.30 is: 1,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.26 : 3,221.14 = 760.30 : x
  2. Step 2: Convert to fraction form
    2,147.26/3,221.14 = 760.30/x
  3. Step 3: Cross multiply
    2,147.26x = 3,221.14 × 760.30
  4. Step 4: Simplify right side
    2,147.26x = 2,449,032.74
  5. Step 5: Solve for x
    x = 2,449,032.74/2,147.26
  6. Step 6: Final answer
    x = 1,140.54

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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.