Home / 1,196.85-1,649.61-823.17

Finding the Fourth Proportional to 1,196.85, 1,649.61 and 823.17

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Solution

The fourth proportional to 1,196.85, 1,649.61 and 823.17 is: 1,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.85 : 1,649.61 = 823.17 : x
  2. Step 2: Convert to fraction form
    1,196.85/1,649.61 = 823.17/x
  3. Step 3: Cross multiply
    1,196.85x = 1,649.61 × 823.17
  4. Step 4: Simplify right side
    1,196.85x = 1,357,909.46
  5. Step 5: Solve for x
    x = 1,357,909.46/1,196.85
  6. Step 6: Final answer
    x = 1,134.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.