Home / 2,938.61-4,054.86-1,679.47

Finding the Fourth Proportional to 2,938.61, 4,054.86 and 1,679.47

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Solution

The fourth proportional to 2,938.61, 4,054.86 and 1,679.47 is: 2,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.61 : 4,054.86 = 1,679.47 : x
  2. Step 2: Convert to fraction form
    2,938.61/4,054.86 = 1,679.47/x
  3. Step 3: Cross multiply
    2,938.61x = 4,054.86 × 1,679.47
  4. Step 4: Simplify right side
    2,938.61x = 6,810,005.59
  5. Step 5: Solve for x
    x = 6,810,005.59/2,938.61
  6. Step 6: Final answer
    x = 2,317.42

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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.