Home / 5,219.82-7,203.21-2,981.65

Finding the Fourth Proportional to 5,219.82, 7,203.21 and 2,981.65

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Solution

The fourth proportional to 5,219.82, 7,203.21 and 2,981.65 is: 4,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.82 : 7,203.21 = 2,981.65 : x
  2. Step 2: Convert to fraction form
    5,219.82/7,203.21 = 2,981.65/x
  3. Step 3: Cross multiply
    5,219.82x = 7,203.21 × 2,981.65
  4. Step 4: Simplify right side
    5,219.82x = 21,477,436.19
  5. Step 5: Solve for x
    x = 21,477,436.19/5,219.82
  6. Step 6: Final answer
    x = 4,114.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.