Home / 8,857.13-12,221.80-5,028.51

Finding the Fourth Proportional to 8,857.13, 12,221.80 and 5,028.51

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Solution

The fourth proportional to 8,857.13, 12,221.80 and 5,028.51 is: 6,938.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.13 : 12,221.80 = 5,028.51 : x
  2. Step 2: Convert to fraction form
    8,857.13/12,221.80 = 5,028.51/x
  3. Step 3: Cross multiply
    8,857.13x = 12,221.80 × 5,028.51
  4. Step 4: Simplify right side
    8,857.13x = 61,457,418.38
  5. Step 5: Solve for x
    x = 61,457,418.38/8,857.13
  6. Step 6: Final answer
    x = 6,938.75

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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.