Home / 1,209.74-1,818.05-1,176.12

Finding the Fourth Proportional to 1,209.74, 1,818.05 and 1,176.12

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Solution

The fourth proportional to 1,209.74, 1,818.05 and 1,176.12 is: 1,767.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.74 : 1,818.05 = 1,176.12 : x
  2. Step 2: Convert to fraction form
    1,209.74/1,818.05 = 1,176.12/x
  3. Step 3: Cross multiply
    1,209.74x = 1,818.05 × 1,176.12
  4. Step 4: Simplify right side
    1,209.74x = 2,138,239.09
  5. Step 5: Solve for x
    x = 2,138,239.09/1,209.74
  6. Step 6: Final answer
    x = 1,767.53

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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.