Home / 3,180.08-4,769.56-870.96

Finding the Fourth Proportional to 3,180.08, 4,769.56 and 870.96

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Solution

The fourth proportional to 3,180.08, 4,769.56 and 870.96 is: 1,306.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.08 : 4,769.56 = 870.96 : x
  2. Step 2: Convert to fraction form
    3,180.08/4,769.56 = 870.96/x
  3. Step 3: Cross multiply
    3,180.08x = 4,769.56 × 870.96
  4. Step 4: Simplify right side
    3,180.08x = 4,154,095.98
  5. Step 5: Solve for x
    x = 4,154,095.98/3,180.08
  6. Step 6: Final answer
    x = 1,306.29

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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.