Home / 8,914.78-12,302.68-5,137.64

Finding the Fourth Proportional to 8,914.78, 12,302.68 and 5,137.64

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Solution

The fourth proportional to 8,914.78, 12,302.68 and 5,137.64 is: 7,090.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.78 : 12,302.68 = 5,137.64 : x
  2. Step 2: Convert to fraction form
    8,914.78/12,302.68 = 5,137.64/x
  3. Step 3: Cross multiply
    8,914.78x = 12,302.68 × 5,137.64
  4. Step 4: Simplify right side
    8,914.78x = 63,206,740.88
  5. Step 5: Solve for x
    x = 63,206,740.88/8,914.78
  6. Step 6: Final answer
    x = 7,090.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.