Home / 8,685.52-13,028.12-2,111.66

Finding the Fourth Proportional to 8,685.52, 13,028.12 and 2,111.66

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Solution

The fourth proportional to 8,685.52, 13,028.12 and 2,111.66 is: 3,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.52 : 13,028.12 = 2,111.66 : x
  2. Step 2: Convert to fraction form
    8,685.52/13,028.12 = 2,111.66/x
  3. Step 3: Cross multiply
    8,685.52x = 13,028.12 × 2,111.66
  4. Step 4: Simplify right side
    8,685.52x = 27,510,959.88
  5. Step 5: Solve for x
    x = 27,510,959.88/8,685.52
  6. Step 6: Final answer
    x = 3,167.45

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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.