Home / 9,128.89-13,691.70-2,555.74

Finding the Fourth Proportional to 9,128.89, 13,691.70 and 2,555.74

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Solution

The fourth proportional to 9,128.89, 13,691.70 and 2,555.74 is: 3,833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.89 : 13,691.70 = 2,555.74 : x
  2. Step 2: Convert to fraction form
    9,128.89/13,691.70 = 2,555.74/x
  3. Step 3: Cross multiply
    9,128.89x = 13,691.70 × 2,555.74
  4. Step 4: Simplify right side
    9,128.89x = 34,992,425.36
  5. Step 5: Solve for x
    x = 34,992,425.36/9,128.89
  6. Step 6: Final answer
    x = 3,833.15

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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.