Home / 9,128.78-13,693.19-2,555.02

Finding the Fourth Proportional to 9,128.78, 13,693.19 and 2,555.02

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Solution

The fourth proportional to 9,128.78, 13,693.19 and 2,555.02 is: 3,832.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.78 : 13,693.19 = 2,555.02 : x
  2. Step 2: Convert to fraction form
    9,128.78/13,693.19 = 2,555.02/x
  3. Step 3: Cross multiply
    9,128.78x = 13,693.19 × 2,555.02
  4. Step 4: Simplify right side
    9,128.78x = 34,986,374.31
  5. Step 5: Solve for x
    x = 34,986,374.31/9,128.78
  6. Step 6: Final answer
    x = 3,832.54

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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.