Home / 5,812.20-8,719.52-1,809.99

Finding the Fourth Proportional to 5,812.20, 8,719.52 and 1,809.99

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Solution

The fourth proportional to 5,812.20, 8,719.52 and 1,809.99 is: 2,715.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812.20 : 8,719.52 = 1,809.99 : x
  2. Step 2: Convert to fraction form
    5,812.20/8,719.52 = 1,809.99/x
  3. Step 3: Cross multiply
    5,812.20x = 8,719.52 × 1,809.99
  4. Step 4: Simplify right side
    5,812.20x = 15,782,234.95
  5. Step 5: Solve for x
    x = 15,782,234.95/5,812.20
  6. Step 6: Final answer
    x = 2,715.36

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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.