Home / 5,688.78-7,850.52-3,171.12

Finding the Fourth Proportional to 5,688.78, 7,850.52 and 3,171.12

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Solution

The fourth proportional to 5,688.78, 7,850.52 and 3,171.12 is: 4,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,688.78 : 7,850.52 = 3,171.12 : x
  2. Step 2: Convert to fraction form
    5,688.78/7,850.52 = 3,171.12/x
  3. Step 3: Cross multiply
    5,688.78x = 7,850.52 × 3,171.12
  4. Step 4: Simplify right side
    5,688.78x = 24,894,940.98
  5. Step 5: Solve for x
    x = 24,894,940.98/5,688.78
  6. Step 6: Final answer
    x = 4,376.15

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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.