Home / 1,111.07-1,663.68-934.94

Finding the Fourth Proportional to 1,111.07, 1,663.68 and 934.94

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Solution

The fourth proportional to 1,111.07, 1,663.68 and 934.94 is: 1,399.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.07 : 1,663.68 = 934.94 : x
  2. Step 2: Convert to fraction form
    1,111.07/1,663.68 = 934.94/x
  3. Step 3: Cross multiply
    1,111.07x = 1,663.68 × 934.94
  4. Step 4: Simplify right side
    1,111.07x = 1,555,432.66
  5. Step 5: Solve for x
    x = 1,555,432.66/1,111.07
  6. Step 6: Final answer
    x = 1,399.95

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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.