Home / 2,179.85-3,269.12-619.98

Finding the Fourth Proportional to 2,179.85, 3,269.12 and 619.98

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Solution

The fourth proportional to 2,179.85, 3,269.12 and 619.98 is: 929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.85 : 3,269.12 = 619.98 : x
  2. Step 2: Convert to fraction form
    2,179.85/3,269.12 = 619.98/x
  3. Step 3: Cross multiply
    2,179.85x = 3,269.12 × 619.98
  4. Step 4: Simplify right side
    2,179.85x = 2,026,789.02
  5. Step 5: Solve for x
    x = 2,026,789.02/2,179.85
  6. Step 6: Final answer
    x = 929.78

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1.5x scale

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.