Home / 7,920.26-10,931.18-4,517.28

Finding the Fourth Proportional to 7,920.26, 10,931.18 and 4,517.28

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Solution

The fourth proportional to 7,920.26, 10,931.18 and 4,517.28 is: 6,234.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.26 : 10,931.18 = 4,517.28 : x
  2. Step 2: Convert to fraction form
    7,920.26/10,931.18 = 4,517.28/x
  3. Step 3: Cross multiply
    7,920.26x = 10,931.18 × 4,517.28
  4. Step 4: Simplify right side
    7,920.26x = 49,379,200.79
  5. Step 5: Solve for x
    x = 49,379,200.79/7,920.26
  6. Step 6: Final answer
    x = 6,234.54

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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.