Home / 1,209.11-1,815.19-1,006.16

Finding the Fourth Proportional to 1,209.11, 1,815.19 and 1,006.16

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Solution

The fourth proportional to 1,209.11, 1,815.19 and 1,006.16 is: 1,510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.11 : 1,815.19 = 1,006.16 : x
  2. Step 2: Convert to fraction form
    1,209.11/1,815.19 = 1,006.16/x
  3. Step 3: Cross multiply
    1,209.11x = 1,815.19 × 1,006.16
  4. Step 4: Simplify right side
    1,209.11x = 1,826,359.98
  5. Step 5: Solve for x
    x = 1,826,359.98/1,209.11
  6. Step 6: Final answer
    x = 1,510.51

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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.