Home / 3,486.90-5,206.43-2,871.80

Finding the Fourth Proportional to 3,486.90, 5,206.43 and 2,871.80

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Solution

The fourth proportional to 3,486.90, 5,206.43 and 2,871.80 is: 4,288.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.90 : 5,206.43 = 2,871.80 : x
  2. Step 2: Convert to fraction form
    3,486.90/5,206.43 = 2,871.80/x
  3. Step 3: Cross multiply
    3,486.90x = 5,206.43 × 2,871.80
  4. Step 4: Simplify right side
    3,486.90x = 14,951,839.48
  5. Step 5: Solve for x
    x = 14,951,839.48/3,486.90
  6. Step 6: Final answer
    x = 4,288.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.