Home / 8,669.22-11,962.80-5,131.82

Finding the Fourth Proportional to 8,669.22, 11,962.80 and 5,131.82

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Solution

The fourth proportional to 8,669.22, 11,962.80 and 5,131.82 is: 7,081.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.22 : 11,962.80 = 5,131.82 : x
  2. Step 2: Convert to fraction form
    8,669.22/11,962.80 = 5,131.82/x
  3. Step 3: Cross multiply
    8,669.22x = 11,962.80 × 5,131.82
  4. Step 4: Simplify right side
    8,669.22x = 61,390,936.30
  5. Step 5: Solve for x
    x = 61,390,936.30/8,669.22
  6. Step 6: Final answer
    x = 7,081.48

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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.