Home / 4,632.78-6,388.20-3,138.06

Finding the Fourth Proportional to 4,632.78, 6,388.20 and 3,138.06

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Solution

The fourth proportional to 4,632.78, 6,388.20 and 3,138.06 is: 4,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,632.78 : 6,388.20 = 3,138.06 : x
  2. Step 2: Convert to fraction form
    4,632.78/6,388.20 = 3,138.06/x
  3. Step 3: Cross multiply
    4,632.78x = 6,388.20 × 3,138.06
  4. Step 4: Simplify right side
    4,632.78x = 20,046,554.89
  5. Step 5: Solve for x
    x = 20,046,554.89/4,632.78
  6. Step 6: Final answer
    x = 4,327.11

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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.