Home / 2,638.68-3,639.65-1,692.97

Finding the Fourth Proportional to 2,638.68, 3,639.65 and 1,692.97

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Solution

The fourth proportional to 2,638.68, 3,639.65 and 1,692.97 is: 2,335.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.68 : 3,639.65 = 1,692.97 : x
  2. Step 2: Convert to fraction form
    2,638.68/3,639.65 = 1,692.97/x
  3. Step 3: Cross multiply
    2,638.68x = 3,639.65 × 1,692.97
  4. Step 4: Simplify right side
    2,638.68x = 6,161,800.70
  5. Step 5: Solve for x
    x = 6,161,800.70/2,638.68
  6. Step 6: Final answer
    x = 2,335.19

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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.