Home / 2,240.40-3,091.56-1,308.96

Finding the Fourth Proportional to 2,240.40, 3,091.56 and 1,308.96

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Solution

The fourth proportional to 2,240.40, 3,091.56 and 1,308.96 is: 1,806.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.40 : 3,091.56 = 1,308.96 : x
  2. Step 2: Convert to fraction form
    2,240.40/3,091.56 = 1,308.96/x
  3. Step 3: Cross multiply
    2,240.40x = 3,091.56 × 1,308.96
  4. Step 4: Simplify right side
    2,240.40x = 4,046,728.38
  5. Step 5: Solve for x
    x = 4,046,728.38/2,240.40
  6. Step 6: Final answer
    x = 1,806.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.