Home / 2,221.36-3,332.15-720.53

Finding the Fourth Proportional to 2,221.36, 3,332.15 and 720.53

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Solution

The fourth proportional to 2,221.36, 3,332.15 and 720.53 is: 1,080.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.36 : 3,332.15 = 720.53 : x
  2. Step 2: Convert to fraction form
    2,221.36/3,332.15 = 720.53/x
  3. Step 3: Cross multiply
    2,221.36x = 3,332.15 × 720.53
  4. Step 4: Simplify right side
    2,221.36x = 2,400,913.03
  5. Step 5: Solve for x
    x = 2,400,913.03/2,221.36
  6. Step 6: Final answer
    x = 1,080.83

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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.