Home / 7,081.16-9,772.25-3,894.70

Finding the Fourth Proportional to 7,081.16, 9,772.25 and 3,894.70

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Solution

The fourth proportional to 7,081.16, 9,772.25 and 3,894.70 is: 5,374.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.16 : 9,772.25 = 3,894.70 : x
  2. Step 2: Convert to fraction form
    7,081.16/9,772.25 = 3,894.70/x
  3. Step 3: Cross multiply
    7,081.16x = 9,772.25 × 3,894.70
  4. Step 4: Simplify right side
    7,081.16x = 38,059,982.08
  5. Step 5: Solve for x
    x = 38,059,982.08/7,081.16
  6. Step 6: Final answer
    x = 5,374.82

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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.