Home / 1,816.12-2,723.88-517.28

Finding the Fourth Proportional to 1,816.12, 2,723.88 and 517.28

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Solution

The fourth proportional to 1,816.12, 2,723.88 and 517.28 is: 775.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.12 : 2,723.88 = 517.28 : x
  2. Step 2: Convert to fraction form
    1,816.12/2,723.88 = 517.28/x
  3. Step 3: Cross multiply
    1,816.12x = 2,723.88 × 517.28
  4. Step 4: Simplify right side
    1,816.12x = 1,409,008.65
  5. Step 5: Solve for x
    x = 1,409,008.65/1,816.12
  6. Step 6: Final answer
    x = 775.83

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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.