Home / 8,538.81-12,783.30-5,241.91

Finding the Fourth Proportional to 8,538.81, 12,783.30 and 5,241.91

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Solution

The fourth proportional to 8,538.81, 12,783.30 and 5,241.91 is: 7,847.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.81 : 12,783.30 = 5,241.91 : x
  2. Step 2: Convert to fraction form
    8,538.81/12,783.30 = 5,241.91/x
  3. Step 3: Cross multiply
    8,538.81x = 12,783.30 × 5,241.91
  4. Step 4: Simplify right side
    8,538.81x = 67,008,844.19
  5. Step 5: Solve for x
    x = 67,008,844.19/8,538.81
  6. Step 6: Final answer
    x = 7,847.57

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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.