Home / 2,815.53-4,217.82-1,355.71

Finding the Fourth Proportional to 2,815.53, 4,217.82 and 1,355.71

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Solution

The fourth proportional to 2,815.53, 4,217.82 and 1,355.71 is: 2,030.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.53 : 4,217.82 = 1,355.71 : x
  2. Step 2: Convert to fraction form
    2,815.53/4,217.82 = 1,355.71/x
  3. Step 3: Cross multiply
    2,815.53x = 4,217.82 × 1,355.71
  4. Step 4: Simplify right side
    2,815.53x = 5,718,140.75
  5. Step 5: Solve for x
    x = 5,718,140.75/2,815.53
  6. Step 6: Final answer
    x = 2,030.93

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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.