Home / 3,118.40-4,305.05-2,056.89

Finding the Fourth Proportional to 3,118.40, 4,305.05 and 2,056.89

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Solution

The fourth proportional to 3,118.40, 4,305.05 and 2,056.89 is: 2,839.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.40 : 4,305.05 = 2,056.89 : x
  2. Step 2: Convert to fraction form
    3,118.40/4,305.05 = 2,056.89/x
  3. Step 3: Cross multiply
    3,118.40x = 4,305.05 × 2,056.89
  4. Step 4: Simplify right side
    3,118.40x = 8,855,027.87
  5. Step 5: Solve for x
    x = 8,855,027.87/3,118.40
  6. Step 6: Final answer
    x = 2,839.61

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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.