Home / 3,815.20-5,726.40-2,357.20

Finding the Fourth Proportional to 3,815.20, 5,726.40 and 2,357.20

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Solution

The fourth proportional to 3,815.20, 5,726.40 and 2,357.20 is: 3,538.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.20 : 5,726.40 = 2,357.20 : x
  2. Step 2: Convert to fraction form
    3,815.20/5,726.40 = 2,357.20/x
  3. Step 3: Cross multiply
    3,815.20x = 5,726.40 × 2,357.20
  4. Step 4: Simplify right side
    3,815.20x = 13,498,270.08
  5. Step 5: Solve for x
    x = 13,498,270.08/3,815.20
  6. Step 6: Final answer
    x = 3,538.02

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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.