Home / 9,121.93-13,688.17-3,856.60

Finding the Fourth Proportional to 9,121.93, 13,688.17 and 3,856.60

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Solution

The fourth proportional to 9,121.93, 13,688.17 and 3,856.60 is: 5,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.93 : 13,688.17 = 3,856.60 : x
  2. Step 2: Convert to fraction form
    9,121.93/13,688.17 = 3,856.60/x
  3. Step 3: Cross multiply
    9,121.93x = 13,688.17 × 3,856.60
  4. Step 4: Simplify right side
    9,121.93x = 52,789,796.42
  5. Step 5: Solve for x
    x = 52,789,796.42/9,121.93
  6. Step 6: Final answer
    x = 5,787.13

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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.