Home / 7,111.80-10,667.97-2,729.70

Finding the Fourth Proportional to 7,111.80, 10,667.97 and 2,729.70

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Solution

The fourth proportional to 7,111.80, 10,667.97 and 2,729.70 is: 4,094.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.80 : 10,667.97 = 2,729.70 : x
  2. Step 2: Convert to fraction form
    7,111.80/10,667.97 = 2,729.70/x
  3. Step 3: Cross multiply
    7,111.80x = 10,667.97 × 2,729.70
  4. Step 4: Simplify right side
    7,111.80x = 29,120,357.71
  5. Step 5: Solve for x
    x = 29,120,357.71/7,111.80
  6. Step 6: Final answer
    x = 4,094.65

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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.