Home / 3,889.95-5,820.35-2,159.79

Finding the Fourth Proportional to 3,889.95, 5,820.35 and 2,159.79

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Solution

The fourth proportional to 3,889.95, 5,820.35 and 2,159.79 is: 3,231.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.95 : 5,820.35 = 2,159.79 : x
  2. Step 2: Convert to fraction form
    3,889.95/5,820.35 = 2,159.79/x
  3. Step 3: Cross multiply
    3,889.95x = 5,820.35 × 2,159.79
  4. Step 4: Simplify right side
    3,889.95x = 12,570,722.93
  5. Step 5: Solve for x
    x = 12,570,722.93/3,889.95
  6. Step 6: Final answer
    x = 3,231.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.