Home / 3,251.28-4,870.80-1,605.90

Finding the Fourth Proportional to 3,251.28, 4,870.80 and 1,605.90

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Solution

The fourth proportional to 3,251.28, 4,870.80 and 1,605.90 is: 2,405.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.28 : 4,870.80 = 1,605.90 : x
  2. Step 2: Convert to fraction form
    3,251.28/4,870.80 = 1,605.90/x
  3. Step 3: Cross multiply
    3,251.28x = 4,870.80 × 1,605.90
  4. Step 4: Simplify right side
    3,251.28x = 7,822,017.72
  5. Step 5: Solve for x
    x = 7,822,017.72/3,251.28
  6. Step 6: Final answer
    x = 2,405.83

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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.