Home / 1,279.50-1,919.73-510.06

Finding the Fourth Proportional to 1,279.50, 1,919.73 and 510.06

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Solution

The fourth proportional to 1,279.50, 1,919.73 and 510.06 is: 765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.50 : 1,919.73 = 510.06 : x
  2. Step 2: Convert to fraction form
    1,279.50/1,919.73 = 510.06/x
  3. Step 3: Cross multiply
    1,279.50x = 1,919.73 × 510.06
  4. Step 4: Simplify right side
    1,279.50x = 979,177.48
  5. Step 5: Solve for x
    x = 979,177.48/1,279.50
  6. Step 6: Final answer
    x = 765.28

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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.