Home / 8,685.38-13,028.07-2,111.51

Finding the Fourth Proportional to 8,685.38, 13,028.07 and 2,111.51

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Solution

The fourth proportional to 8,685.38, 13,028.07 and 2,111.51 is: 3,167.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.38 : 13,028.07 = 2,111.51 : x
  2. Step 2: Convert to fraction form
    8,685.38/13,028.07 = 2,111.51/x
  3. Step 3: Cross multiply
    8,685.38x = 13,028.07 × 2,111.51
  4. Step 4: Simplify right side
    8,685.38x = 27,508,882.40
  5. Step 5: Solve for x
    x = 27,508,882.40/8,685.38
  6. Step 6: Final answer
    x = 3,167.26

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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.