Home / 3,721.20-5,132.80-2,392.80

Finding the Fourth Proportional to 3,721.20, 5,132.80 and 2,392.80

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Solution

The fourth proportional to 3,721.20, 5,132.80 and 2,392.80 is: 3,300.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.20 : 5,132.80 = 2,392.80 : x
  2. Step 2: Convert to fraction form
    3,721.20/5,132.80 = 2,392.80/x
  3. Step 3: Cross multiply
    3,721.20x = 5,132.80 × 2,392.80
  4. Step 4: Simplify right side
    3,721.20x = 12,281,763.84
  5. Step 5: Solve for x
    x = 12,281,763.84/3,721.20
  6. Step 6: Final answer
    x = 3,300.48

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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.