Home / 2,690.30-3,711.47-1,641.75

Finding the Fourth Proportional to 2,690.30, 3,711.47 and 1,641.75

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Solution

The fourth proportional to 2,690.30, 3,711.47 and 1,641.75 is: 2,264.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.30 : 3,711.47 = 1,641.75 : x
  2. Step 2: Convert to fraction form
    2,690.30/3,711.47 = 1,641.75/x
  3. Step 3: Cross multiply
    2,690.30x = 3,711.47 × 1,641.75
  4. Step 4: Simplify right side
    2,690.30x = 6,093,297.66
  5. Step 5: Solve for x
    x = 6,093,297.66/2,690.30
  6. Step 6: Final answer
    x = 2,264.92

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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.