Home / 8,738.78-12,071.31-6,982.70

Finding the Fourth Proportional to 8,738.78, 12,071.31 and 6,982.70

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Solution

The fourth proportional to 8,738.78, 12,071.31 and 6,982.70 is: 9,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,738.78 : 12,071.31 = 6,982.70 : x
  2. Step 2: Convert to fraction form
    8,738.78/12,071.31 = 6,982.70/x
  3. Step 3: Cross multiply
    8,738.78x = 12,071.31 × 6,982.70
  4. Step 4: Simplify right side
    8,738.78x = 84,290,336.34
  5. Step 5: Solve for x
    x = 84,290,336.34/8,738.78
  6. Step 6: Final answer
    x = 9,645.55

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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.