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Finding the Fourth Proportional to 3,471.68, 5,208 and 1,524.40

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Solution

The fourth proportional to 3,471.68, 5,208 and 1,524.40 is: 2,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.68 : 5,208 = 1,524.40 : x
  2. Step 2: Convert to fraction form
    3,471.68/5,208 = 1,524.40/x
  3. Step 3: Cross multiply
    3,471.68x = 5,208 × 1,524.40
  4. Step 4: Simplify right side
    3,471.68x = 7,939,075.20
  5. Step 5: Solve for x
    x = 7,939,075.20/3,471.68
  6. Step 6: Final answer
    x = 2,286.81

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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.