Home / 1,111.40-1,667.10-935.23

Finding the Fourth Proportional to 1,111.40, 1,667.10 and 935.23

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Solution

The fourth proportional to 1,111.40, 1,667.10 and 935.23 is: 1,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.40 : 1,667.10 = 935.23 : x
  2. Step 2: Convert to fraction form
    1,111.40/1,667.10 = 935.23/x
  3. Step 3: Cross multiply
    1,111.40x = 1,667.10 × 935.23
  4. Step 4: Simplify right side
    1,111.40x = 1,559,121.93
  5. Step 5: Solve for x
    x = 1,559,121.93/1,111.40
  6. Step 6: Final answer
    x = 1,402.85

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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.