Home / 2,208.12-3,312.21-747.27

Finding the Fourth Proportional to 2,208.12, 3,312.21 and 747.27

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Solution

The fourth proportional to 2,208.12, 3,312.21 and 747.27 is: 1,120.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.12 : 3,312.21 = 747.27 : x
  2. Step 2: Convert to fraction form
    2,208.12/3,312.21 = 747.27/x
  3. Step 3: Cross multiply
    2,208.12x = 3,312.21 × 747.27
  4. Step 4: Simplify right side
    2,208.12x = 2,475,115.17
  5. Step 5: Solve for x
    x = 2,475,115.17/2,208.12
  6. Step 6: Final answer
    x = 1,120.92

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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.