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Finding the Fourth Proportional to 2,883.87, 3,980.34 and 1,887.30

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Solution

The fourth proportional to 2,883.87, 3,980.34 and 1,887.30 is: 2,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.87 : 3,980.34 = 1,887.30 : x
  2. Step 2: Convert to fraction form
    2,883.87/3,980.34 = 1,887.30/x
  3. Step 3: Cross multiply
    2,883.87x = 3,980.34 × 1,887.30
  4. Step 4: Simplify right side
    2,883.87x = 7,512,095.68
  5. Step 5: Solve for x
    x = 7,512,095.68/2,883.87
  6. Step 6: Final answer
    x = 2,604.87

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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.