Home / 4,989.60-7,481.70-2,068.20

Finding the Fourth Proportional to 4,989.60, 7,481.70 and 2,068.20

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Solution

The fourth proportional to 4,989.60, 7,481.70 and 2,068.20 is: 3,101.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.60 : 7,481.70 = 2,068.20 : x
  2. Step 2: Convert to fraction form
    4,989.60/7,481.70 = 2,068.20/x
  3. Step 3: Cross multiply
    4,989.60x = 7,481.70 × 2,068.20
  4. Step 4: Simplify right side
    4,989.60x = 15,473,651.94
  5. Step 5: Solve for x
    x = 15,473,651.94/4,989.60
  6. Step 6: Final answer
    x = 3,101.18

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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.