Home / 2,639.40-3,641.32-1,694.98

Finding the Fourth Proportional to 2,639.40, 3,641.32 and 1,694.98

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Solution

The fourth proportional to 2,639.40, 3,641.32 and 1,694.98 is: 2,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.40 : 3,641.32 = 1,694.98 : x
  2. Step 2: Convert to fraction form
    2,639.40/3,641.32 = 1,694.98/x
  3. Step 3: Cross multiply
    2,639.40x = 3,641.32 × 1,694.98
  4. Step 4: Simplify right side
    2,639.40x = 6,171,964.57
  5. Step 5: Solve for x
    x = 6,171,964.57/2,639.40
  6. Step 6: Final answer
    x = 2,338.40

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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.