Home / 2,240.14-3,360.48-778.90

Finding the Fourth Proportional to 2,240.14, 3,360.48 and 778.90

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Solution

The fourth proportional to 2,240.14, 3,360.48 and 778.90 is: 1,168.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.14 : 3,360.48 = 778.90 : x
  2. Step 2: Convert to fraction form
    2,240.14/3,360.48 = 778.90/x
  3. Step 3: Cross multiply
    2,240.14x = 3,360.48 × 778.90
  4. Step 4: Simplify right side
    2,240.14x = 2,617,477.87
  5. Step 5: Solve for x
    x = 2,617,477.87/2,240.14
  6. Step 6: Final answer
    x = 1,168.44

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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.