Home / 2,815.22-4,222.67-867.42

Finding the Fourth Proportional to 2,815.22, 4,222.67 and 867.42

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Solution

The fourth proportional to 2,815.22, 4,222.67 and 867.42 is: 1,301.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.22 : 4,222.67 = 867.42 : x
  2. Step 2: Convert to fraction form
    2,815.22/4,222.67 = 867.42/x
  3. Step 3: Cross multiply
    2,815.22x = 4,222.67 × 867.42
  4. Step 4: Simplify right side
    2,815.22x = 3,662,824.07
  5. Step 5: Solve for x
    x = 3,662,824.07/2,815.22
  6. Step 6: Final answer
    x = 1,301.08

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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.