Home / 1,279.98-1,919.79-585.90

Finding the Fourth Proportional to 1,279.98, 1,919.79 and 585.90

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Solution

The fourth proportional to 1,279.98, 1,919.79 and 585.90 is: 878.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.98 : 1,919.79 = 585.90 : x
  2. Step 2: Convert to fraction form
    1,279.98/1,919.79 = 585.90/x
  3. Step 3: Cross multiply
    1,279.98x = 1,919.79 × 585.90
  4. Step 4: Simplify right side
    1,279.98x = 1,124,804.96
  5. Step 5: Solve for x
    x = 1,124,804.96/1,279.98
  6. Step 6: Final answer
    x = 878.77

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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.