Home / 2,919.65-4,379.69-1,439.66

Finding the Fourth Proportional to 2,919.65, 4,379.69 and 1,439.66

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Solution

The fourth proportional to 2,919.65, 4,379.69 and 1,439.66 is: 2,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.65 : 4,379.69 = 1,439.66 : x
  2. Step 2: Convert to fraction form
    2,919.65/4,379.69 = 1,439.66/x
  3. Step 3: Cross multiply
    2,919.65x = 4,379.69 × 1,439.66
  4. Step 4: Simplify right side
    2,919.65x = 6,305,279.05
  5. Step 5: Solve for x
    x = 6,305,279.05/2,919.65
  6. Step 6: Final answer
    x = 2,159.60

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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.