Home / 6,839.96-9,429.76-4,320.80

Finding the Fourth Proportional to 6,839.96, 9,429.76 and 4,320.80

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Solution

The fourth proportional to 6,839.96, 9,429.76 and 4,320.80 is: 5,956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,839.96 : 9,429.76 = 4,320.80 : x
  2. Step 2: Convert to fraction form
    6,839.96/9,429.76 = 4,320.80/x
  3. Step 3: Cross multiply
    6,839.96x = 9,429.76 × 4,320.80
  4. Step 4: Simplify right side
    6,839.96x = 40,744,119.78
  5. Step 5: Solve for x
    x = 40,744,119.78/6,839.96
  6. Step 6: Final answer
    x = 5,956.78

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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.