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Finding the Fourth Proportional to 8,855, 12,222.06 and 5,131.16

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Solution

The fourth proportional to 8,855, 12,222.06 and 5,131.16 is: 7,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855 : 12,222.06 = 5,131.16 : x
  2. Step 2: Convert to fraction form
    8,855/12,222.06 = 5,131.16/x
  3. Step 3: Cross multiply
    8,855x = 12,222.06 × 5,131.16
  4. Step 4: Simplify right side
    8,855x = 62,713,345.39
  5. Step 5: Solve for x
    x = 62,713,345.39/8,855
  6. Step 6: Final answer
    x = 7,082.25

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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.