Home / 9,712.21-14,568.39-3,138.40

Finding the Fourth Proportional to 9,712.21, 14,568.39 and 3,138.40

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Solution

The fourth proportional to 9,712.21, 14,568.39 and 3,138.40 is: 4,707.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,712.21 : 14,568.39 = 3,138.40 : x
  2. Step 2: Convert to fraction form
    9,712.21/14,568.39 = 3,138.40/x
  3. Step 3: Cross multiply
    9,712.21x = 14,568.39 × 3,138.40
  4. Step 4: Simplify right side
    9,712.21x = 45,721,435.18
  5. Step 5: Solve for x
    x = 45,721,435.18/9,712.21
  6. Step 6: Final answer
    x = 4,707.62

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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.