Home / 1,628.08-2,440.43-531.70

Finding the Fourth Proportional to 1,628.08, 2,440.43 and 531.70

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Solution

The fourth proportional to 1,628.08, 2,440.43 and 531.70 is: 796.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.08 : 2,440.43 = 531.70 : x
  2. Step 2: Convert to fraction form
    1,628.08/2,440.43 = 531.70/x
  3. Step 3: Cross multiply
    1,628.08x = 2,440.43 × 531.70
  4. Step 4: Simplify right side
    1,628.08x = 1,297,569.87
  5. Step 5: Solve for x
    x = 1,297,569.87/1,628.08
  6. Step 6: Final answer
    x = 796.99

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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.