Home / 5,347.82-7,381.71-3,109.28

Finding the Fourth Proportional to 5,347.82, 7,381.71 and 3,109.28

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Solution

The fourth proportional to 5,347.82, 7,381.71 and 3,109.28 is: 4,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.82 : 7,381.71 = 3,109.28 : x
  2. Step 2: Convert to fraction form
    5,347.82/7,381.71 = 3,109.28/x
  3. Step 3: Cross multiply
    5,347.82x = 7,381.71 × 3,109.28
  4. Step 4: Simplify right side
    5,347.82x = 22,951,766.36
  5. Step 5: Solve for x
    x = 22,951,766.36/5,347.82
  6. Step 6: Final answer
    x = 4,291.80

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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.