Home / 5,116.15-7,678.41-2,651.71

Finding the Fourth Proportional to 5,116.15, 7,678.41 and 2,651.71

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Solution

The fourth proportional to 5,116.15, 7,678.41 and 2,651.71 is: 3,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116.15 : 7,678.41 = 2,651.71 : x
  2. Step 2: Convert to fraction form
    5,116.15/7,678.41 = 2,651.71/x
  3. Step 3: Cross multiply
    5,116.15x = 7,678.41 × 2,651.71
  4. Step 4: Simplify right side
    5,116.15x = 20,360,916.58
  5. Step 5: Solve for x
    x = 20,360,916.58/5,116.15
  6. Step 6: Final answer
    x = 3,979.73

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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.