Home / 5,167.30-7,129.68-2,928.66

Finding the Fourth Proportional to 5,167.30, 7,129.68 and 2,928.66

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Solution

The fourth proportional to 5,167.30, 7,129.68 and 2,928.66 is: 4,040.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.30 : 7,129.68 = 2,928.66 : x
  2. Step 2: Convert to fraction form
    5,167.30/7,129.68 = 2,928.66/x
  3. Step 3: Cross multiply
    5,167.30x = 7,129.68 × 2,928.66
  4. Step 4: Simplify right side
    5,167.30x = 20,880,408.63
  5. Step 5: Solve for x
    x = 20,880,408.63/5,167.30
  6. Step 6: Final answer
    x = 4,040.87

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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.