Home / 1,070.19-1,474.66-789.97

Finding the Fourth Proportional to 1,070.19, 1,474.66 and 789.97

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Solution

The fourth proportional to 1,070.19, 1,474.66 and 789.97 is: 1,088.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.19 : 1,474.66 = 789.97 : x
  2. Step 2: Convert to fraction form
    1,070.19/1,474.66 = 789.97/x
  3. Step 3: Cross multiply
    1,070.19x = 1,474.66 × 789.97
  4. Step 4: Simplify right side
    1,070.19x = 1,164,937.16
  5. Step 5: Solve for x
    x = 1,164,937.16/1,070.19
  6. Step 6: Final answer
    x = 1,088.53

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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.