Home / 3,815.17-5,722.74-1,218.11

Finding the Fourth Proportional to 3,815.17, 5,722.74 and 1,218.11

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Solution

The fourth proportional to 3,815.17, 5,722.74 and 1,218.11 is: 1,827.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.17 : 5,722.74 = 1,218.11 : x
  2. Step 2: Convert to fraction form
    3,815.17/5,722.74 = 1,218.11/x
  3. Step 3: Cross multiply
    3,815.17x = 5,722.74 × 1,218.11
  4. Step 4: Simplify right side
    3,815.17x = 6,970,898.21
  5. Step 5: Solve for x
    x = 6,970,898.21/3,815.17
  6. Step 6: Final answer
    x = 1,827.15

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Similar ratio
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1.5x scale

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.