Home / 5,679.11-7,836-3,320.79

Finding the Fourth Proportional to 5,679.11, 7,836 and 3,320.79

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Solution

The fourth proportional to 5,679.11, 7,836 and 3,320.79 is: 4,582.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.11 : 7,836 = 3,320.79 : x
  2. Step 2: Convert to fraction form
    5,679.11/7,836 = 3,320.79/x
  3. Step 3: Cross multiply
    5,679.11x = 7,836 × 3,320.79
  4. Step 4: Simplify right side
    5,679.11x = 26,021,710.44
  5. Step 5: Solve for x
    x = 26,021,710.44/5,679.11
  6. Step 6: Final answer
    x = 4,582.01

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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.