Home / 6,387.81-8,811.57-3,834.92

Finding the Fourth Proportional to 6,387.81, 8,811.57 and 3,834.92

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Solution

The fourth proportional to 6,387.81, 8,811.57 and 3,834.92 is: 5,290.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.81 : 8,811.57 = 3,834.92 : x
  2. Step 2: Convert to fraction form
    6,387.81/8,811.57 = 3,834.92/x
  3. Step 3: Cross multiply
    6,387.81x = 8,811.57 × 3,834.92
  4. Step 4: Simplify right side
    6,387.81x = 33,791,621.97
  5. Step 5: Solve for x
    x = 33,791,621.97/6,387.81
  6. Step 6: Final answer
    x = 5,290.02

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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.