Home / 2,179.28-3,269.16-698.15

Finding the Fourth Proportional to 2,179.28, 3,269.16 and 698.15

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Solution

The fourth proportional to 2,179.28, 3,269.16 and 698.15 is: 1,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.28 : 3,269.16 = 698.15 : x
  2. Step 2: Convert to fraction form
    2,179.28/3,269.16 = 698.15/x
  3. Step 3: Cross multiply
    2,179.28x = 3,269.16 × 698.15
  4. Step 4: Simplify right side
    2,179.28x = 2,282,364.05
  5. Step 5: Solve for x
    x = 2,282,364.05/2,179.28
  6. Step 6: Final answer
    x = 1,047.30

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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.