Home / 3,809.28-5,711.04-1,210.72

Finding the Fourth Proportional to 3,809.28, 5,711.04 and 1,210.72

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Solution

The fourth proportional to 3,809.28, 5,711.04 and 1,210.72 is: 1,815.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.28 : 5,711.04 = 1,210.72 : x
  2. Step 2: Convert to fraction form
    3,809.28/5,711.04 = 1,210.72/x
  3. Step 3: Cross multiply
    3,809.28x = 5,711.04 × 1,210.72
  4. Step 4: Simplify right side
    3,809.28x = 6,914,470.35
  5. Step 5: Solve for x
    x = 6,914,470.35/3,809.28
  6. Step 6: Final answer
    x = 1,815.16

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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.