Home / 5,278.28-7,898.25-4,671.38

Finding the Fourth Proportional to 5,278.28, 7,898.25 and 4,671.38

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Solution

The fourth proportional to 5,278.28, 7,898.25 and 4,671.38 is: 6,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.28 : 7,898.25 = 4,671.38 : x
  2. Step 2: Convert to fraction form
    5,278.28/7,898.25 = 4,671.38/x
  3. Step 3: Cross multiply
    5,278.28x = 7,898.25 × 4,671.38
  4. Step 4: Simplify right side
    5,278.28x = 36,895,727.09
  5. Step 5: Solve for x
    x = 36,895,727.09/5,278.28
  6. Step 6: Final answer
    x = 6,990.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.