Home / 10,579.43-15,870.20-3,917.72

Finding the Fourth Proportional to 10,579.43, 15,870.20 and 3,917.72

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Solution

The fourth proportional to 10,579.43, 15,870.20 and 3,917.72 is: 5,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,579.43 : 15,870.20 = 3,917.72 : x
  2. Step 2: Convert to fraction form
    10,579.43/15,870.20 = 3,917.72/x
  3. Step 3: Cross multiply
    10,579.43x = 15,870.20 × 3,917.72
  4. Step 4: Simplify right side
    10,579.43x = 62,174,930.76
  5. Step 5: Solve for x
    x = 62,174,930.76/10,579.43
  6. Step 6: Final answer
    x = 5,876.97

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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.