Home / 2,008.32-3,012.40-911.88

Finding the Fourth Proportional to 2,008.32, 3,012.40 and 911.88

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Solution

The fourth proportional to 2,008.32, 3,012.40 and 911.88 is: 1,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.32 : 3,012.40 = 911.88 : x
  2. Step 2: Convert to fraction form
    2,008.32/3,012.40 = 911.88/x
  3. Step 3: Cross multiply
    2,008.32x = 3,012.40 × 911.88
  4. Step 4: Simplify right side
    2,008.32x = 2,746,947.31
  5. Step 5: Solve for x
    x = 2,746,947.31/2,008.32
  6. Step 6: Final answer
    x = 1,367.78

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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.