Home / 2,240.31-3,091.91-1,356.12

Finding the Fourth Proportional to 2,240.31, 3,091.91 and 1,356.12

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Solution

The fourth proportional to 2,240.31, 3,091.91 and 1,356.12 is: 1,871.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.31 : 3,091.91 = 1,356.12 : x
  2. Step 2: Convert to fraction form
    2,240.31/3,091.91 = 1,356.12/x
  3. Step 3: Cross multiply
    2,240.31x = 3,091.91 × 1,356.12
  4. Step 4: Simplify right side
    2,240.31x = 4,193,000.99
  5. Step 5: Solve for x
    x = 4,193,000.99/2,240.31
  6. Step 6: Final answer
    x = 1,871.62

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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.