Home / 8,486.37-11,711.66-5,129.17

Finding the Fourth Proportional to 8,486.37, 11,711.66 and 5,129.17

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Solution

The fourth proportional to 8,486.37, 11,711.66 and 5,129.17 is: 7,078.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.37 : 11,711.66 = 5,129.17 : x
  2. Step 2: Convert to fraction form
    8,486.37/11,711.66 = 5,129.17/x
  3. Step 3: Cross multiply
    8,486.37x = 11,711.66 × 5,129.17
  4. Step 4: Simplify right side
    8,486.37x = 60,071,040.20
  5. Step 5: Solve for x
    x = 60,071,040.20/8,486.37
  6. Step 6: Final answer
    x = 7,078.53

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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.