Home / 9,128.39-13,684.38-3,280.91

Finding the Fourth Proportional to 9,128.39, 13,684.38 and 3,280.91

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Solution

The fourth proportional to 9,128.39, 13,684.38 and 3,280.91 is: 4,918.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.39 : 13,684.38 = 3,280.91 : x
  2. Step 2: Convert to fraction form
    9,128.39/13,684.38 = 3,280.91/x
  3. Step 3: Cross multiply
    9,128.39x = 13,684.38 × 3,280.91
  4. Step 4: Simplify right side
    9,128.39x = 44,897,219.19
  5. Step 5: Solve for x
    x = 44,897,219.19/9,128.39
  6. Step 6: Final answer
    x = 4,918.42

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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.