Home / 5,815.60-8,719.10-1,864.57

Finding the Fourth Proportional to 5,815.60, 8,719.10 and 1,864.57

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Solution

The fourth proportional to 5,815.60, 8,719.10 and 1,864.57 is: 2,795.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.60 : 8,719.10 = 1,864.57 : x
  2. Step 2: Convert to fraction form
    5,815.60/8,719.10 = 1,864.57/x
  3. Step 3: Cross multiply
    5,815.60x = 8,719.10 × 1,864.57
  4. Step 4: Simplify right side
    5,815.60x = 16,257,355.15
  5. Step 5: Solve for x
    x = 16,257,355.15/5,815.60
  6. Step 6: Final answer
    x = 2,795.47

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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.