Home / 2,815.94-4,217.56-1,356.18

Finding the Fourth Proportional to 2,815.94, 4,217.56 and 1,356.18

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Solution

The fourth proportional to 2,815.94, 4,217.56 and 1,356.18 is: 2,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.94 : 4,217.56 = 1,356.18 : x
  2. Step 2: Convert to fraction form
    2,815.94/4,217.56 = 1,356.18/x
  3. Step 3: Cross multiply
    2,815.94x = 4,217.56 × 1,356.18
  4. Step 4: Simplify right side
    2,815.94x = 5,719,767.13
  5. Step 5: Solve for x
    x = 5,719,767.13/2,815.94
  6. Step 6: Final answer
    x = 2,031.21

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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.