Home / 2,426.40-3,640.20-783.09

Finding the Fourth Proportional to 2,426.40, 3,640.20 and 783.09

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Solution

The fourth proportional to 2,426.40, 3,640.20 and 783.09 is: 1,174.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,426.40 : 3,640.20 = 783.09 : x
  2. Step 2: Convert to fraction form
    2,426.40/3,640.20 = 783.09/x
  3. Step 3: Cross multiply
    2,426.40x = 3,640.20 × 783.09
  4. Step 4: Simplify right side
    2,426.40x = 2,850,604.22
  5. Step 5: Solve for x
    x = 2,850,604.22/2,426.40
  6. Step 6: Final answer
    x = 1,174.83

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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.