Home / 2,635.21-3,634.92-1,690.01

Finding the Fourth Proportional to 2,635.21, 3,634.92 and 1,690.01

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Solution

The fourth proportional to 2,635.21, 3,634.92 and 1,690.01 is: 2,331.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.21 : 3,634.92 = 1,690.01 : x
  2. Step 2: Convert to fraction form
    2,635.21/3,634.92 = 1,690.01/x
  3. Step 3: Cross multiply
    2,635.21x = 3,634.92 × 1,690.01
  4. Step 4: Simplify right side
    2,635.21x = 6,143,032.97
  5. Step 5: Solve for x
    x = 6,143,032.97/2,635.21
  6. Step 6: Final answer
    x = 2,331.14

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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.