Home / 2,979.78-4,112.26-1,653.45

Finding the Fourth Proportional to 2,979.78, 4,112.26 and 1,653.45

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Solution

The fourth proportional to 2,979.78, 4,112.26 and 1,653.45 is: 2,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.78 : 4,112.26 = 1,653.45 : x
  2. Step 2: Convert to fraction form
    2,979.78/4,112.26 = 1,653.45/x
  3. Step 3: Cross multiply
    2,979.78x = 4,112.26 × 1,653.45
  4. Step 4: Simplify right side
    2,979.78x = 6,799,408.03
  5. Step 5: Solve for x
    x = 6,799,408.03/2,979.78
  6. Step 6: Final answer
    x = 2,281.85

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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.