Home / 8,688.43-13,030.64-5,179.43

Finding the Fourth Proportional to 8,688.43, 13,030.64 and 5,179.43

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Solution

The fourth proportional to 8,688.43, 13,030.64 and 5,179.43 is: 7,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.43 : 13,030.64 = 5,179.43 : x
  2. Step 2: Convert to fraction form
    8,688.43/13,030.64 = 5,179.43/x
  3. Step 3: Cross multiply
    8,688.43x = 13,030.64 × 5,179.43
  4. Step 4: Simplify right side
    8,688.43x = 67,491,235.53
  5. Step 5: Solve for x
    x = 67,491,235.53/8,688.43
  6. Step 6: Final answer
    x = 7,767.95

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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.