Home / 2,815.60-4,226-1,429.92

Finding the Fourth Proportional to 2,815.60, 4,226 and 1,429.92

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Solution

The fourth proportional to 2,815.60, 4,226 and 1,429.92 is: 2,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.60 : 4,226 = 1,429.92 : x
  2. Step 2: Convert to fraction form
    2,815.60/4,226 = 1,429.92/x
  3. Step 3: Cross multiply
    2,815.60x = 4,226 × 1,429.92
  4. Step 4: Simplify right side
    2,815.60x = 6,042,841.92
  5. Step 5: Solve for x
    x = 6,042,841.92/2,815.60
  6. Step 6: Final answer
    x = 2,146.20

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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.