Home / 8,215.81-12,325.66-2,669.15

Finding the Fourth Proportional to 8,215.81, 12,325.66 and 2,669.15

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Solution

The fourth proportional to 8,215.81, 12,325.66 and 2,669.15 is: 4,004.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.81 : 12,325.66 = 2,669.15 : x
  2. Step 2: Convert to fraction form
    8,215.81/12,325.66 = 2,669.15/x
  3. Step 3: Cross multiply
    8,215.81x = 12,325.66 × 2,669.15
  4. Step 4: Simplify right side
    8,215.81x = 32,899,059.53
  5. Step 5: Solve for x
    x = 32,899,059.53/8,215.81
  6. Step 6: Final answer
    x = 4,004.36

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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.