Home / 1,126.71-1,552.12-936.86

Finding the Fourth Proportional to 1,126.71, 1,552.12 and 936.86

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Solution

The fourth proportional to 1,126.71, 1,552.12 and 936.86 is: 1,290.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.71 : 1,552.12 = 936.86 : x
  2. Step 2: Convert to fraction form
    1,126.71/1,552.12 = 936.86/x
  3. Step 3: Cross multiply
    1,126.71x = 1,552.12 × 936.86
  4. Step 4: Simplify right side
    1,126.71x = 1,454,109.04
  5. Step 5: Solve for x
    x = 1,454,109.04/1,126.71
  6. Step 6: Final answer
    x = 1,290.58

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1.5x scale

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.