Home / 7,278.18-10,910.78-3,116.06

Finding the Fourth Proportional to 7,278.18, 10,910.78 and 3,116.06

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Solution

The fourth proportional to 7,278.18, 10,910.78 and 3,116.06 is: 4,671.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.18 : 10,910.78 = 3,116.06 : x
  2. Step 2: Convert to fraction form
    7,278.18/10,910.78 = 3,116.06/x
  3. Step 3: Cross multiply
    7,278.18x = 10,910.78 × 3,116.06
  4. Step 4: Simplify right side
    7,278.18x = 33,998,645.13
  5. Step 5: Solve for x
    x = 33,998,645.13/7,278.18
  6. Step 6: Final answer
    x = 4,671.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.