Home / 2,240.27-3,091.40-1,245.39

Finding the Fourth Proportional to 2,240.27, 3,091.40 and 1,245.39

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Solution

The fourth proportional to 2,240.27, 3,091.40 and 1,245.39 is: 1,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.27 : 3,091.40 = 1,245.39 : x
  2. Step 2: Convert to fraction form
    2,240.27/3,091.40 = 1,245.39/x
  3. Step 3: Cross multiply
    2,240.27x = 3,091.40 × 1,245.39
  4. Step 4: Simplify right side
    2,240.27x = 3,849,985.50
  5. Step 5: Solve for x
    x = 3,849,985.50/2,240.27
  6. Step 6: Final answer
    x = 1,718.54

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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.