Home / 6,621.27-9,122.92-4,942

Finding the Fourth Proportional to 6,621.27, 9,122.92 and 4,942

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Solution

The fourth proportional to 6,621.27, 9,122.92 and 4,942 is: 6,809.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.27 : 9,122.92 = 4,942 : x
  2. Step 2: Convert to fraction form
    6,621.27/9,122.92 = 4,942/x
  3. Step 3: Cross multiply
    6,621.27x = 9,122.92 × 4,942
  4. Step 4: Simplify right side
    6,621.27x = 45,085,470.64
  5. Step 5: Solve for x
    x = 45,085,470.64/6,621.27
  6. Step 6: Final answer
    x = 6,809.19

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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.