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Finding the Fourth Proportional to 2,889.78, 4,313.76 and 2,539.46

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Solution

The fourth proportional to 2,889.78, 4,313.76 and 2,539.46 is: 3,790.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.78 : 4,313.76 = 2,539.46 : x
  2. Step 2: Convert to fraction form
    2,889.78/4,313.76 = 2,539.46/x
  3. Step 3: Cross multiply
    2,889.78x = 4,313.76 × 2,539.46
  4. Step 4: Simplify right side
    2,889.78x = 10,954,622.23
  5. Step 5: Solve for x
    x = 10,954,622.23/2,889.78
  6. Step 6: Final answer
    x = 3,790.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.