Home / 3,730.78-5,147.75-2,238.15

Finding the Fourth Proportional to 3,730.78, 5,147.75 and 2,238.15

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Solution

The fourth proportional to 3,730.78, 5,147.75 and 2,238.15 is: 3,088.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.78 : 5,147.75 = 2,238.15 : x
  2. Step 2: Convert to fraction form
    3,730.78/5,147.75 = 2,238.15/x
  3. Step 3: Cross multiply
    3,730.78x = 5,147.75 × 2,238.15
  4. Step 4: Simplify right side
    3,730.78x = 11,521,436.66
  5. Step 5: Solve for x
    x = 11,521,436.66/3,730.78
  6. Step 6: Final answer
    x = 3,088.21

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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.