Home / 2,471.40-3,406.32-1,936.80

Finding the Fourth Proportional to 2,471.40, 3,406.32 and 1,936.80

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Solution

The fourth proportional to 2,471.40, 3,406.32 and 1,936.80 is: 2,669.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,471.40 : 3,406.32 = 1,936.80 : x
  2. Step 2: Convert to fraction form
    2,471.40/3,406.32 = 1,936.80/x
  3. Step 3: Cross multiply
    2,471.40x = 3,406.32 × 1,936.80
  4. Step 4: Simplify right side
    2,471.40x = 6,597,360.58
  5. Step 5: Solve for x
    x = 6,597,360.58/2,471.40
  6. Step 6: Final answer
    x = 2,669.48

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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.