Home / 1,045.40-1,441.13-823.95

Finding the Fourth Proportional to 1,045.40, 1,441.13 and 823.95

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Solution

The fourth proportional to 1,045.40, 1,441.13 and 823.95 is: 1,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.40 : 1,441.13 = 823.95 : x
  2. Step 2: Convert to fraction form
    1,045.40/1,441.13 = 823.95/x
  3. Step 3: Cross multiply
    1,045.40x = 1,441.13 × 823.95
  4. Step 4: Simplify right side
    1,045.40x = 1,187,414.94
  5. Step 5: Solve for x
    x = 1,187,414.94/1,045.40
  6. Step 6: Final answer
    x = 1,135.85

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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.