Home / 2,815.60-4,222.84-966.56

Finding the Fourth Proportional to 2,815.60, 4,222.84 and 966.56

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Solution

The fourth proportional to 2,815.60, 4,222.84 and 966.56 is: 1,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.60 : 4,222.84 = 966.56 : x
  2. Step 2: Convert to fraction form
    2,815.60/4,222.84 = 966.56/x
  3. Step 3: Cross multiply
    2,815.60x = 4,222.84 × 966.56
  4. Step 4: Simplify right side
    2,815.60x = 4,081,628.23
  5. Step 5: Solve for x
    x = 4,081,628.23/2,815.60
  6. Step 6: Final answer
    x = 1,449.65

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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.