Home / 3,727.55-5,138.94-2,815.07

Finding the Fourth Proportional to 3,727.55, 5,138.94 and 2,815.07

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Solution

The fourth proportional to 3,727.55, 5,138.94 and 2,815.07 is: 3,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,727.55 : 5,138.94 = 2,815.07 : x
  2. Step 2: Convert to fraction form
    3,727.55/5,138.94 = 2,815.07/x
  3. Step 3: Cross multiply
    3,727.55x = 5,138.94 × 2,815.07
  4. Step 4: Simplify right side
    3,727.55x = 14,466,479.96
  5. Step 5: Solve for x
    x = 14,466,479.96/3,727.55
  6. Step 6: Final answer
    x = 3,880.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.