Home / 3,156.82-4,352.36-2,160.38

Finding the Fourth Proportional to 3,156.82, 4,352.36 and 2,160.38

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Solution

The fourth proportional to 3,156.82, 4,352.36 and 2,160.38 is: 2,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.82 : 4,352.36 = 2,160.38 : x
  2. Step 2: Convert to fraction form
    3,156.82/4,352.36 = 2,160.38/x
  3. Step 3: Cross multiply
    3,156.82x = 4,352.36 × 2,160.38
  4. Step 4: Simplify right side
    3,156.82x = 9,402,751.58
  5. Step 5: Solve for x
    x = 9,402,751.58/3,156.82
  6. Step 6: Final answer
    x = 2,978.55

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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.