Home / 3,387.85-4,675.49-1,971.97

Finding the Fourth Proportional to 3,387.85, 4,675.49 and 1,971.97

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Solution

The fourth proportional to 3,387.85, 4,675.49 and 1,971.97 is: 2,721.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.85 : 4,675.49 = 1,971.97 : x
  2. Step 2: Convert to fraction form
    3,387.85/4,675.49 = 1,971.97/x
  3. Step 3: Cross multiply
    3,387.85x = 4,675.49 × 1,971.97
  4. Step 4: Simplify right side
    3,387.85x = 9,219,926.02
  5. Step 5: Solve for x
    x = 9,219,926.02/3,387.85
  6. Step 6: Final answer
    x = 2,721.47

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1.5x scale

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.