Home / 2,240.10-3,360.15-778.22

Finding the Fourth Proportional to 2,240.10, 3,360.15 and 778.22

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Solution

The fourth proportional to 2,240.10, 3,360.15 and 778.22 is: 1,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.10 : 3,360.15 = 778.22 : x
  2. Step 2: Convert to fraction form
    2,240.10/3,360.15 = 778.22/x
  3. Step 3: Cross multiply
    2,240.10x = 3,360.15 × 778.22
  4. Step 4: Simplify right side
    2,240.10x = 2,614,944.33
  5. Step 5: Solve for x
    x = 2,614,944.33/2,240.10
  6. Step 6: Final answer
    x = 1,167.33

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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.