Home / 1,474.20-2,206.44-856.17

Finding the Fourth Proportional to 1,474.20, 2,206.44 and 856.17

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Solution

The fourth proportional to 1,474.20, 2,206.44 and 856.17 is: 1,281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.20 : 2,206.44 = 856.17 : x
  2. Step 2: Convert to fraction form
    1,474.20/2,206.44 = 856.17/x
  3. Step 3: Cross multiply
    1,474.20x = 2,206.44 × 856.17
  4. Step 4: Simplify right side
    1,474.20x = 1,889,087.73
  5. Step 5: Solve for x
    x = 1,889,087.73/1,474.20
  6. Step 6: Final answer
    x = 1,281.43

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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.