Home / 5,118.12-7,061.79-2,879.56

Finding the Fourth Proportional to 5,118.12, 7,061.79 and 2,879.56

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Solution

The fourth proportional to 5,118.12, 7,061.79 and 2,879.56 is: 3,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.12 : 7,061.79 = 2,879.56 : x
  2. Step 2: Convert to fraction form
    5,118.12/7,061.79 = 2,879.56/x
  3. Step 3: Cross multiply
    5,118.12x = 7,061.79 × 2,879.56
  4. Step 4: Simplify right side
    5,118.12x = 20,334,848.01
  5. Step 5: Solve for x
    x = 20,334,848.01/5,118.12
  6. Step 6: Final answer
    x = 3,973.11

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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.