Home / 7,138.14-10,708.48-2,458.64

Finding the Fourth Proportional to 7,138.14, 10,708.48 and 2,458.64

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Solution

The fourth proportional to 7,138.14, 10,708.48 and 2,458.64 is: 3,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.14 : 10,708.48 = 2,458.64 : x
  2. Step 2: Convert to fraction form
    7,138.14/10,708.48 = 2,458.64/x
  3. Step 3: Cross multiply
    7,138.14x = 10,708.48 × 2,458.64
  4. Step 4: Simplify right side
    7,138.14x = 26,328,297.27
  5. Step 5: Solve for x
    x = 26,328,297.27/7,138.14
  6. Step 6: Final answer
    x = 3,688.40

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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.