Home / 9,128.60-13,694.24-2,887.20

Finding the Fourth Proportional to 9,128.60, 13,694.24 and 2,887.20

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Solution

The fourth proportional to 9,128.60, 13,694.24 and 2,887.20 is: 4,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.60 : 13,694.24 = 2,887.20 : x
  2. Step 2: Convert to fraction form
    9,128.60/13,694.24 = 2,887.20/x
  3. Step 3: Cross multiply
    9,128.60x = 13,694.24 × 2,887.20
  4. Step 4: Simplify right side
    9,128.60x = 39,538,009.73
  5. Step 5: Solve for x
    x = 39,538,009.73/9,128.60
  6. Step 6: Final answer
    x = 4,331.22

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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.