Home / 9,129.78-13,695.43-2,555.96

Finding the Fourth Proportional to 9,129.78, 13,695.43 and 2,555.96

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Solution

The fourth proportional to 9,129.78, 13,695.43 and 2,555.96 is: 3,834.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.78 : 13,695.43 = 2,555.96 : x
  2. Step 2: Convert to fraction form
    9,129.78/13,695.43 = 2,555.96/x
  3. Step 3: Cross multiply
    9,129.78x = 13,695.43 × 2,555.96
  4. Step 4: Simplify right side
    9,129.78x = 35,004,896.40
  5. Step 5: Solve for x
    x = 35,004,896.40/9,129.78
  6. Step 6: Final answer
    x = 3,834.14

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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.