Home / 7,121.13-10,667.79-4,899.57

Finding the Fourth Proportional to 7,121.13, 10,667.79 and 4,899.57

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Solution

The fourth proportional to 7,121.13, 10,667.79 and 4,899.57 is: 7,339.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.13 : 10,667.79 = 4,899.57 : x
  2. Step 2: Convert to fraction form
    7,121.13/10,667.79 = 4,899.57/x
  3. Step 3: Cross multiply
    7,121.13x = 10,667.79 × 4,899.57
  4. Step 4: Simplify right side
    7,121.13x = 52,267,583.85
  5. Step 5: Solve for x
    x = 52,267,583.85/7,121.13
  6. Step 6: Final answer
    x = 7,339.79

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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.