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Finding the Fourth Proportional to 3,615.87, 5,422.71 and 1,535.86

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Solution

The fourth proportional to 3,615.87, 5,422.71 and 1,535.86 is: 2,303.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.87 : 5,422.71 = 1,535.86 : x
  2. Step 2: Convert to fraction form
    3,615.87/5,422.71 = 1,535.86/x
  3. Step 3: Cross multiply
    3,615.87x = 5,422.71 × 1,535.86
  4. Step 4: Simplify right side
    3,615.87x = 8,328,496.27
  5. Step 5: Solve for x
    x = 8,328,496.27/3,615.87
  6. Step 6: Final answer
    x = 2,303.32

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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.