Home / 5,815.10-8,725.18-2,891.72

Finding the Fourth Proportional to 5,815.10, 8,725.18 and 2,891.72

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Solution

The fourth proportional to 5,815.10, 8,725.18 and 2,891.72 is: 4,338.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.10 : 8,725.18 = 2,891.72 : x
  2. Step 2: Convert to fraction form
    5,815.10/8,725.18 = 2,891.72/x
  3. Step 3: Cross multiply
    5,815.10x = 8,725.18 × 2,891.72
  4. Step 4: Simplify right side
    5,815.10x = 25,230,777.51
  5. Step 5: Solve for x
    x = 25,230,777.51/5,815.10
  6. Step 6: Final answer
    x = 4,338.84

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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.