Home / 2,887.43-3,981.05-2,409.09

Finding the Fourth Proportional to 2,887.43, 3,981.05 and 2,409.09

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Solution

The fourth proportional to 2,887.43, 3,981.05 and 2,409.09 is: 3,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.43 : 3,981.05 = 2,409.09 : x
  2. Step 2: Convert to fraction form
    2,887.43/3,981.05 = 2,409.09/x
  3. Step 3: Cross multiply
    2,887.43x = 3,981.05 × 2,409.09
  4. Step 4: Simplify right side
    2,887.43x = 9,590,695.70
  5. Step 5: Solve for x
    x = 9,590,695.70/2,887.43
  6. Step 6: Final answer
    x = 3,321.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.