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Finding the Fourth Proportional to 3,561.87, 5,337.81 and 1,479.63

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Solution

The fourth proportional to 3,561.87, 5,337.81 and 1,479.63 is: 2,217.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.87 : 5,337.81 = 1,479.63 : x
  2. Step 2: Convert to fraction form
    3,561.87/5,337.81 = 1,479.63/x
  3. Step 3: Cross multiply
    3,561.87x = 5,337.81 × 1,479.63
  4. Step 4: Simplify right side
    3,561.87x = 7,897,983.81
  5. Step 5: Solve for x
    x = 7,897,983.81/3,561.87
  6. Step 6: Final answer
    x = 2,217.37

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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.