Home / 8,928.52-12,321.36-5,391.64

Finding the Fourth Proportional to 8,928.52, 12,321.36 and 5,391.64

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Solution

The fourth proportional to 8,928.52, 12,321.36 and 5,391.64 is: 7,440.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.52 : 12,321.36 = 5,391.64 : x
  2. Step 2: Convert to fraction form
    8,928.52/12,321.36 = 5,391.64/x
  3. Step 3: Cross multiply
    8,928.52x = 12,321.36 × 5,391.64
  4. Step 4: Simplify right side
    8,928.52x = 66,432,337.43
  5. Step 5: Solve for x
    x = 66,432,337.43/8,928.52
  6. Step 6: Final answer
    x = 7,440.46

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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.