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Finding the Fourth Proportional to 7,879.43, 10,869.98 and 5,045.44

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Solution

The fourth proportional to 7,879.43, 10,869.98 and 5,045.44 is: 6,960.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.43 : 10,869.98 = 5,045.44 : x
  2. Step 2: Convert to fraction form
    7,879.43/10,869.98 = 5,045.44/x
  3. Step 3: Cross multiply
    7,879.43x = 10,869.98 × 5,045.44
  4. Step 4: Simplify right side
    7,879.43x = 54,843,831.89
  5. Step 5: Solve for x
    x = 54,843,831.89/7,879.43
  6. Step 6: Final answer
    x = 6,960.38

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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.