Home / 2,221.20-3,332.37-760.37

Finding the Fourth Proportional to 2,221.20, 3,332.37 and 760.37

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Solution

The fourth proportional to 2,221.20, 3,332.37 and 760.37 is: 1,140.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.20 : 3,332.37 = 760.37 : x
  2. Step 2: Convert to fraction form
    2,221.20/3,332.37 = 760.37/x
  3. Step 3: Cross multiply
    2,221.20x = 3,332.37 × 760.37
  4. Step 4: Simplify right side
    2,221.20x = 2,533,817.52
  5. Step 5: Solve for x
    x = 2,533,817.52/2,221.20
  6. Step 6: Final answer
    x = 1,140.74

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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.