Home / 2,521.20-3,781.80-2,359.20

Finding the Fourth Proportional to 2,521.20, 3,781.80 and 2,359.20

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Solution

The fourth proportional to 2,521.20, 3,781.80 and 2,359.20 is: 3,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.20 : 3,781.80 = 2,359.20 : x
  2. Step 2: Convert to fraction form
    2,521.20/3,781.80 = 2,359.20/x
  3. Step 3: Cross multiply
    2,521.20x = 3,781.80 × 2,359.20
  4. Step 4: Simplify right side
    2,521.20x = 8,922,022.56
  5. Step 5: Solve for x
    x = 8,922,022.56/2,521.20
  6. Step 6: Final answer
    x = 3,538.80

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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.