Home / 1,519.70-2,279.56-424.07

Finding the Fourth Proportional to 1,519.70, 2,279.56 and 424.07

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Solution

The fourth proportional to 1,519.70, 2,279.56 and 424.07 is: 636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.70 : 2,279.56 = 424.07 : x
  2. Step 2: Convert to fraction form
    1,519.70/2,279.56 = 424.07/x
  3. Step 3: Cross multiply
    1,519.70x = 2,279.56 × 424.07
  4. Step 4: Simplify right side
    1,519.70x = 966,690.89
  5. Step 5: Solve for x
    x = 966,690.89/1,519.70
  6. Step 6: Final answer
    x = 636.11

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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.