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Finding the Fourth Proportional to 28,685.58, 43,027.29 and 7,908.54

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Solution

The fourth proportional to 28,685.58, 43,027.29 and 7,908.54 is: 11,862.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.58 : 43,027.29 = 7,908.54 : x
  2. Step 2: Convert to fraction form
    28,685.58/43,027.29 = 7,908.54/x
  3. Step 3: Cross multiply
    28,685.58x = 43,027.29 × 7,908.54
  4. Step 4: Simplify right side
    28,685.58x = 340,283,044.06
  5. Step 5: Solve for x
    x = 340,283,044.06/28,685.58
  6. Step 6: Final answer
    x = 11,862.51

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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.