Home / 8,688.78-13,031.91-2,845.62

Finding the Fourth Proportional to 8,688.78, 13,031.91 and 2,845.62

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Solution

The fourth proportional to 8,688.78, 13,031.91 and 2,845.62 is: 4,268.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.78 : 13,031.91 = 2,845.62 : x
  2. Step 2: Convert to fraction form
    8,688.78/13,031.91 = 2,845.62/x
  3. Step 3: Cross multiply
    8,688.78x = 13,031.91 × 2,845.62
  4. Step 4: Simplify right side
    8,688.78x = 37,083,863.73
  5. Step 5: Solve for x
    x = 37,083,863.73/8,688.78
  6. Step 6: Final answer
    x = 4,268.02

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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.