Home / 2,639.05-3,640.34-2,008.46

Finding the Fourth Proportional to 2,639.05, 3,640.34 and 2,008.46

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Solution

The fourth proportional to 2,639.05, 3,640.34 and 2,008.46 is: 2,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.05 : 3,640.34 = 2,008.46 : x
  2. Step 2: Convert to fraction form
    2,639.05/3,640.34 = 2,008.46/x
  3. Step 3: Cross multiply
    2,639.05x = 3,640.34 × 2,008.46
  4. Step 4: Simplify right side
    2,639.05x = 7,311,491.40
  5. Step 5: Solve for x
    x = 7,311,491.40/2,639.05
  6. Step 6: Final answer
    x = 2,770.50

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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.