Home / 4,749.12-7,121.85-2,117.43

Finding the Fourth Proportional to 4,749.12, 7,121.85 and 2,117.43

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Solution

The fourth proportional to 4,749.12, 7,121.85 and 2,117.43 is: 3,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.12 : 7,121.85 = 2,117.43 : x
  2. Step 2: Convert to fraction form
    4,749.12/7,121.85 = 2,117.43/x
  3. Step 3: Cross multiply
    4,749.12x = 7,121.85 × 2,117.43
  4. Step 4: Simplify right side
    4,749.12x = 15,080,018.85
  5. Step 5: Solve for x
    x = 15,080,018.85/4,749.12
  6. Step 6: Final answer
    x = 3,175.33

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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.