Home / 4,989.80-7,481.10-3,259.40

Finding the Fourth Proportional to 4,989.80, 7,481.10 and 3,259.40

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Solution

The fourth proportional to 4,989.80, 7,481.10 and 3,259.40 is: 4,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.80 : 7,481.10 = 3,259.40 : x
  2. Step 2: Convert to fraction form
    4,989.80/7,481.10 = 3,259.40/x
  3. Step 3: Cross multiply
    4,989.80x = 7,481.10 × 3,259.40
  4. Step 4: Simplify right side
    4,989.80x = 24,383,897.34
  5. Step 5: Solve for x
    x = 24,383,897.34/4,989.80
  6. Step 6: Final answer
    x = 4,886.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.