Home / 2,979.17-4,112.58-1,859.90

Finding the Fourth Proportional to 2,979.17, 4,112.58 and 1,859.90

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Solution

The fourth proportional to 2,979.17, 4,112.58 and 1,859.90 is: 2,567.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.17 : 4,112.58 = 1,859.90 : x
  2. Step 2: Convert to fraction form
    2,979.17/4,112.58 = 1,859.90/x
  3. Step 3: Cross multiply
    2,979.17x = 4,112.58 × 1,859.90
  4. Step 4: Simplify right side
    2,979.17x = 7,648,987.54
  5. Step 5: Solve for x
    x = 7,648,987.54/2,979.17
  6. Step 6: Final answer
    x = 2,567.49

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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.