Home / 2,240.88-3,091.32-1,309.20

Finding the Fourth Proportional to 2,240.88, 3,091.32 and 1,309.20

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Solution

The fourth proportional to 2,240.88, 3,091.32 and 1,309.20 is: 1,806.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.88 : 3,091.32 = 1,309.20 : x
  2. Step 2: Convert to fraction form
    2,240.88/3,091.32 = 1,309.20/x
  3. Step 3: Cross multiply
    2,240.88x = 3,091.32 × 1,309.20
  4. Step 4: Simplify right side
    2,240.88x = 4,047,156.14
  5. Step 5: Solve for x
    x = 4,047,156.14/2,240.88
  6. Step 6: Final answer
    x = 1,806.06

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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.