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Finding the Fourth Proportional to 2,639.64, 3,640.68 and 2,482.92

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Solution

The fourth proportional to 2,639.64, 3,640.68 and 2,482.92 is: 3,424.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.64 : 3,640.68 = 2,482.92 : x
  2. Step 2: Convert to fraction form
    2,639.64/3,640.68 = 2,482.92/x
  3. Step 3: Cross multiply
    2,639.64x = 3,640.68 × 2,482.92
  4. Step 4: Simplify right side
    2,639.64x = 9,039,517.19
  5. Step 5: Solve for x
    x = 9,039,517.19/2,639.64
  6. Step 6: Final answer
    x = 3,424.53

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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.