Home / 7,121.06-10,679.71-4,899.43

Finding the Fourth Proportional to 7,121.06, 10,679.71 and 4,899.43

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Solution

The fourth proportional to 7,121.06, 10,679.71 and 4,899.43 is: 7,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.06 : 10,679.71 = 4,899.43 : x
  2. Step 2: Convert to fraction form
    7,121.06/10,679.71 = 4,899.43/x
  3. Step 3: Cross multiply
    7,121.06x = 10,679.71 × 4,899.43
  4. Step 4: Simplify right side
    7,121.06x = 52,324,491.57
  5. Step 5: Solve for x
    x = 52,324,491.57/7,121.06
  6. Step 6: Final answer
    x = 7,347.85

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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.