Home / 8,929.35-12,322.80-5,391.86

Finding the Fourth Proportional to 8,929.35, 12,322.80 and 5,391.86

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Solution

The fourth proportional to 8,929.35, 12,322.80 and 5,391.86 is: 7,440.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.35 : 12,322.80 = 5,391.86 : x
  2. Step 2: Convert to fraction form
    8,929.35/12,322.80 = 5,391.86/x
  3. Step 3: Cross multiply
    8,929.35x = 12,322.80 × 5,391.86
  4. Step 4: Simplify right side
    8,929.35x = 66,442,750.79
  5. Step 5: Solve for x
    x = 66,442,750.79/8,929.35
  6. Step 6: Final answer
    x = 7,440.94

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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.