Home / 8,122.96-11,215.56-5,336.56

Finding the Fourth Proportional to 8,122.96, 11,215.56 and 5,336.56

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Solution

The fourth proportional to 8,122.96, 11,215.56 and 5,336.56 is: 7,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.96 : 11,215.56 = 5,336.56 : x
  2. Step 2: Convert to fraction form
    8,122.96/11,215.56 = 5,336.56/x
  3. Step 3: Cross multiply
    8,122.96x = 11,215.56 × 5,336.56
  4. Step 4: Simplify right side
    8,122.96x = 59,852,508.87
  5. Step 5: Solve for x
    x = 59,852,508.87/8,122.96
  6. Step 6: Final answer
    x = 7,368.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.