Home / 3,159.78-4,353.93-2,686.02

Finding the Fourth Proportional to 3,159.78, 4,353.93 and 2,686.02

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Solution

The fourth proportional to 3,159.78, 4,353.93 and 2,686.02 is: 3,701.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.78 : 4,353.93 = 2,686.02 : x
  2. Step 2: Convert to fraction form
    3,159.78/4,353.93 = 2,686.02/x
  3. Step 3: Cross multiply
    3,159.78x = 4,353.93 × 2,686.02
  4. Step 4: Simplify right side
    3,159.78x = 11,694,743.06
  5. Step 5: Solve for x
    x = 11,694,743.06/3,159.78
  6. Step 6: Final answer
    x = 3,701.13

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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.