Home / 8,906.23-12,287.15-5,718.68

Finding the Fourth Proportional to 8,906.23, 12,287.15 and 5,718.68

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Solution

The fourth proportional to 8,906.23, 12,287.15 and 5,718.68 is: 7,889.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.23 : 12,287.15 = 5,718.68 : x
  2. Step 2: Convert to fraction form
    8,906.23/12,287.15 = 5,718.68/x
  3. Step 3: Cross multiply
    8,906.23x = 12,287.15 × 5,718.68
  4. Step 4: Simplify right side
    8,906.23x = 70,266,278.96
  5. Step 5: Solve for x
    x = 70,266,278.96/8,906.23
  6. Step 6: Final answer
    x = 7,889.56

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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.