Home / 1,519.23-2,278.96-479.28

Finding the Fourth Proportional to 1,519.23, 2,278.96 and 479.28

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Solution

The fourth proportional to 1,519.23, 2,278.96 and 479.28 is: 718.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.23 : 2,278.96 = 479.28 : x
  2. Step 2: Convert to fraction form
    1,519.23/2,278.96 = 479.28/x
  3. Step 3: Cross multiply
    1,519.23x = 2,278.96 × 479.28
  4. Step 4: Simplify right side
    1,519.23x = 1,092,267.30
  5. Step 5: Solve for x
    x = 1,092,267.30/1,519.23
  6. Step 6: Final answer
    x = 718.96

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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.