Home / 8,813.31-13,215.78-5,116.68

Finding the Fourth Proportional to 8,813.31, 13,215.78 and 5,116.68

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Solution

The fourth proportional to 8,813.31, 13,215.78 and 5,116.68 is: 7,672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.31 : 13,215.78 = 5,116.68 : x
  2. Step 2: Convert to fraction form
    8,813.31/13,215.78 = 5,116.68/x
  3. Step 3: Cross multiply
    8,813.31x = 13,215.78 × 5,116.68
  4. Step 4: Simplify right side
    8,813.31x = 67,620,917.21
  5. Step 5: Solve for x
    x = 67,620,917.21/8,813.31
  6. Step 6: Final answer
    x = 7,672.59

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1.5x scale

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.