Home / 2,815.60-4,222.92-941.28

Finding the Fourth Proportional to 2,815.60, 4,222.92 and 941.28

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Solution

The fourth proportional to 2,815.60, 4,222.92 and 941.28 is: 1,411.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.60 : 4,222.92 = 941.28 : x
  2. Step 2: Convert to fraction form
    2,815.60/4,222.92 = 941.28/x
  3. Step 3: Cross multiply
    2,815.60x = 4,222.92 × 941.28
  4. Step 4: Simplify right side
    2,815.60x = 3,974,930.77
  5. Step 5: Solve for x
    x = 3,974,930.77/2,815.60
  6. Step 6: Final answer
    x = 1,411.75

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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.