Home / 5,421.40-7,481.63-3,182.47

Finding the Fourth Proportional to 5,421.40, 7,481.63 and 3,182.47

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Solution

The fourth proportional to 5,421.40, 7,481.63 and 3,182.47 is: 4,391.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.40 : 7,481.63 = 3,182.47 : x
  2. Step 2: Convert to fraction form
    5,421.40/7,481.63 = 3,182.47/x
  3. Step 3: Cross multiply
    5,421.40x = 7,481.63 × 3,182.47
  4. Step 4: Simplify right side
    5,421.40x = 23,810,052.28
  5. Step 5: Solve for x
    x = 23,810,052.28/5,421.40
  6. Step 6: Final answer
    x = 4,391.87

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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.