Home / 4,989.74-7,487.21-2,218.39

Finding the Fourth Proportional to 4,989.74, 7,487.21 and 2,218.39

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Solution

The fourth proportional to 4,989.74, 7,487.21 and 2,218.39 is: 3,328.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.74 : 7,487.21 = 2,218.39 : x
  2. Step 2: Convert to fraction form
    4,989.74/7,487.21 = 2,218.39/x
  3. Step 3: Cross multiply
    4,989.74x = 7,487.21 × 2,218.39
  4. Step 4: Simplify right side
    4,989.74x = 16,609,540.70
  5. Step 5: Solve for x
    x = 16,609,540.70/4,989.74
  6. Step 6: Final answer
    x = 3,328.74

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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.