Home / 4,749.57-7,121.64-2,281.05

Finding the Fourth Proportional to 4,749.57, 7,121.64 and 2,281.05

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Solution

The fourth proportional to 4,749.57, 7,121.64 and 2,281.05 is: 3,420.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.57 : 7,121.64 = 2,281.05 : x
  2. Step 2: Convert to fraction form
    4,749.57/7,121.64 = 2,281.05/x
  3. Step 3: Cross multiply
    4,749.57x = 7,121.64 × 2,281.05
  4. Step 4: Simplify right side
    4,749.57x = 16,244,816.92
  5. Step 5: Solve for x
    x = 16,244,816.92/4,749.57
  6. Step 6: Final answer
    x = 3,420.27

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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.