Home / 4,223.20-5,815.92-3,042.40

Finding the Fourth Proportional to 4,223.20, 5,815.92 and 3,042.40

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Solution

The fourth proportional to 4,223.20, 5,815.92 and 3,042.40 is: 4,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,223.20 : 5,815.92 = 3,042.40 : x
  2. Step 2: Convert to fraction form
    4,223.20/5,815.92 = 3,042.40/x
  3. Step 3: Cross multiply
    4,223.20x = 5,815.92 × 3,042.40
  4. Step 4: Simplify right side
    4,223.20x = 17,694,355.01
  5. Step 5: Solve for x
    x = 17,694,355.01/4,223.20
  6. Step 6: Final answer
    x = 4,189.80

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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.