Home / 8,261.81-12,390.08-2,713.86

Finding the Fourth Proportional to 8,261.81, 12,390.08 and 2,713.86

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Solution

The fourth proportional to 8,261.81, 12,390.08 and 2,713.86 is: 4,069.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.81 : 12,390.08 = 2,713.86 : x
  2. Step 2: Convert to fraction form
    8,261.81/12,390.08 = 2,713.86/x
  3. Step 3: Cross multiply
    8,261.81x = 12,390.08 × 2,713.86
  4. Step 4: Simplify right side
    8,261.81x = 33,624,979.05
  5. Step 5: Solve for x
    x = 33,624,979.05/8,261.81
  6. Step 6: Final answer
    x = 4,069.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.