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Finding the Fourth Proportional to 4,879.02, 6,711.78 and 4,278.81

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Solution

The fourth proportional to 4,879.02, 6,711.78 and 4,278.81 is: 5,886.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.02 : 6,711.78 = 4,278.81 : x
  2. Step 2: Convert to fraction form
    4,879.02/6,711.78 = 4,278.81/x
  3. Step 3: Cross multiply
    4,879.02x = 6,711.78 × 4,278.81
  4. Step 4: Simplify right side
    4,879.02x = 28,718,431.38
  5. Step 5: Solve for x
    x = 28,718,431.38/4,879.02
  6. Step 6: Final answer
    x = 5,886.11

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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.