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Finding the Fourth Proportional to 3,857.52, 5,318.41 and 3,148.67

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Solution

The fourth proportional to 3,857.52, 5,318.41 and 3,148.67 is: 4,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.52 : 5,318.41 = 3,148.67 : x
  2. Step 2: Convert to fraction form
    3,857.52/5,318.41 = 3,148.67/x
  3. Step 3: Cross multiply
    3,857.52x = 5,318.41 × 3,148.67
  4. Step 4: Simplify right side
    3,857.52x = 16,745,929.34
  5. Step 5: Solve for x
    x = 16,745,929.34/3,857.52
  6. Step 6: Final answer
    x = 4,341.11

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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.