Home / 1,179.77-1,769.65-1,115.52

Finding the Fourth Proportional to 1,179.77, 1,769.65 and 1,115.52

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Solution

The fourth proportional to 1,179.77, 1,769.65 and 1,115.52 is: 1,673.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.77 : 1,769.65 = 1,115.52 : x
  2. Step 2: Convert to fraction form
    1,179.77/1,769.65 = 1,115.52/x
  3. Step 3: Cross multiply
    1,179.77x = 1,769.65 × 1,115.52
  4. Step 4: Simplify right side
    1,179.77x = 1,974,080.50
  5. Step 5: Solve for x
    x = 1,974,080.50/1,179.77
  6. Step 6: Final answer
    x = 1,673.28

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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.