Home / 4,259.70-6,389.28-1,919.88

Finding the Fourth Proportional to 4,259.70, 6,389.28 and 1,919.88

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Solution

The fourth proportional to 4,259.70, 6,389.28 and 1,919.88 is: 2,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.70 : 6,389.28 = 1,919.88 : x
  2. Step 2: Convert to fraction form
    4,259.70/6,389.28 = 1,919.88/x
  3. Step 3: Cross multiply
    4,259.70x = 6,389.28 × 1,919.88
  4. Step 4: Simplify right side
    4,259.70x = 12,266,650.89
  5. Step 5: Solve for x
    x = 12,266,650.89/4,259.70
  6. Step 6: Final answer
    x = 2,879.70

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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.