Home / 1,177.72-1,769.04-1,136.78

Finding the Fourth Proportional to 1,177.72, 1,769.04 and 1,136.78

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Solution

The fourth proportional to 1,177.72, 1,769.04 and 1,136.78 is: 1,707.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.72 : 1,769.04 = 1,136.78 : x
  2. Step 2: Convert to fraction form
    1,177.72/1,769.04 = 1,136.78/x
  3. Step 3: Cross multiply
    1,177.72x = 1,769.04 × 1,136.78
  4. Step 4: Simplify right side
    1,177.72x = 2,011,009.29
  5. Step 5: Solve for x
    x = 2,011,009.29/1,177.72
  6. Step 6: Final answer
    x = 1,707.54

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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.