Home / 3,812.95-5,257.47-2,800.06

Finding the Fourth Proportional to 3,812.95, 5,257.47 and 2,800.06

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Solution

The fourth proportional to 3,812.95, 5,257.47 and 2,800.06 is: 3,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.95 : 5,257.47 = 2,800.06 : x
  2. Step 2: Convert to fraction form
    3,812.95/5,257.47 = 2,800.06/x
  3. Step 3: Cross multiply
    3,812.95x = 5,257.47 × 2,800.06
  4. Step 4: Simplify right side
    3,812.95x = 14,721,231.45
  5. Step 5: Solve for x
    x = 14,721,231.45/3,812.95
  6. Step 6: Final answer
    x = 3,860.85

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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.