Home / 5,815.50-8,723.81-1,865.76

Finding the Fourth Proportional to 5,815.50, 8,723.81 and 1,865.76

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Solution

The fourth proportional to 5,815.50, 8,723.81 and 1,865.76 is: 2,798.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.50 : 8,723.81 = 1,865.76 : x
  2. Step 2: Convert to fraction form
    5,815.50/8,723.81 = 1,865.76/x
  3. Step 3: Cross multiply
    5,815.50x = 8,723.81 × 1,865.76
  4. Step 4: Simplify right side
    5,815.50x = 16,276,535.75
  5. Step 5: Solve for x
    x = 16,276,535.75/5,815.50
  6. Step 6: Final answer
    x = 2,798.82

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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.