Home / 2,209.17-3,313.08-747.98

Finding the Fourth Proportional to 2,209.17, 3,313.08 and 747.98

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Solution

The fourth proportional to 2,209.17, 3,313.08 and 747.98 is: 1,121.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.17 : 3,313.08 = 747.98 : x
  2. Step 2: Convert to fraction form
    2,209.17/3,313.08 = 747.98/x
  3. Step 3: Cross multiply
    2,209.17x = 3,313.08 × 747.98
  4. Step 4: Simplify right side
    2,209.17x = 2,478,129.97
  5. Step 5: Solve for x
    x = 2,478,129.97/2,209.17
  6. Step 6: Final answer
    x = 1,121.75

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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.