Home / 1,013.60-1,400.40-935.84

Finding the Fourth Proportional to 1,013.60, 1,400.40 and 935.84

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Solution

The fourth proportional to 1,013.60, 1,400.40 and 935.84 is: 1,292.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.60 : 1,400.40 = 935.84 : x
  2. Step 2: Convert to fraction form
    1,013.60/1,400.40 = 935.84/x
  3. Step 3: Cross multiply
    1,013.60x = 1,400.40 × 935.84
  4. Step 4: Simplify right side
    1,013.60x = 1,310,550.34
  5. Step 5: Solve for x
    x = 1,310,550.34/1,013.60
  6. Step 6: Final answer
    x = 1,292.97

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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.