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Finding the Fourth Proportional to 3,471.67, 5,209.53 and 1,392.67

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Solution

The fourth proportional to 3,471.67, 5,209.53 and 1,392.67 is: 2,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.67 : 5,209.53 = 1,392.67 : x
  2. Step 2: Convert to fraction form
    3,471.67/5,209.53 = 1,392.67/x
  3. Step 3: Cross multiply
    3,471.67x = 5,209.53 × 1,392.67
  4. Step 4: Simplify right side
    3,471.67x = 7,255,156.15
  5. Step 5: Solve for x
    x = 7,255,156.15/3,471.67
  6. Step 6: Final answer
    x = 2,089.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.