Home / 8,115.96-12,143.70-6,258.36

Finding the Fourth Proportional to 8,115.96, 12,143.70 and 6,258.36

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Solution

The fourth proportional to 8,115.96, 12,143.70 and 6,258.36 is: 9,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.96 : 12,143.70 = 6,258.36 : x
  2. Step 2: Convert to fraction form
    8,115.96/12,143.70 = 6,258.36/x
  3. Step 3: Cross multiply
    8,115.96x = 12,143.70 × 6,258.36
  4. Step 4: Simplify right side
    8,115.96x = 75,999,646.33
  5. Step 5: Solve for x
    x = 75,999,646.33/8,115.96
  6. Step 6: Final answer
    x = 9,364.22

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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.