Home / 1,180.24-1,768.69-869.66

Finding the Fourth Proportional to 1,180.24, 1,768.69 and 869.66

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Solution

The fourth proportional to 1,180.24, 1,768.69 and 869.66 is: 1,303.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.24 : 1,768.69 = 869.66 : x
  2. Step 2: Convert to fraction form
    1,180.24/1,768.69 = 869.66/x
  3. Step 3: Cross multiply
    1,180.24x = 1,768.69 × 869.66
  4. Step 4: Simplify right side
    1,180.24x = 1,538,158.95
  5. Step 5: Solve for x
    x = 1,538,158.95/1,180.24
  6. Step 6: Final answer
    x = 1,303.26

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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.