Home / 2,815.40-4,222.16-1,171.04

Finding the Fourth Proportional to 2,815.40, 4,222.16 and 1,171.04

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Solution

The fourth proportional to 2,815.40, 4,222.16 and 1,171.04 is: 1,756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.40 : 4,222.16 = 1,171.04 : x
  2. Step 2: Convert to fraction form
    2,815.40/4,222.16 = 1,171.04/x
  3. Step 3: Cross multiply
    2,815.40x = 4,222.16 × 1,171.04
  4. Step 4: Simplify right side
    2,815.40x = 4,944,318.25
  5. Step 5: Solve for x
    x = 4,944,318.25/2,815.40
  6. Step 6: Final answer
    x = 1,756.17

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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.