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Finding the Fourth Proportional to 8,348.16, 11,520.72 and 4,811.52

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Solution

The fourth proportional to 8,348.16, 11,520.72 and 4,811.52 is: 6,640.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.16 : 11,520.72 = 4,811.52 : x
  2. Step 2: Convert to fraction form
    8,348.16/11,520.72 = 4,811.52/x
  3. Step 3: Cross multiply
    8,348.16x = 11,520.72 × 4,811.52
  4. Step 4: Simplify right side
    8,348.16x = 55,432,174.69
  5. Step 5: Solve for x
    x = 55,432,174.69/8,348.16
  6. Step 6: Final answer
    x = 6,640.05

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1.5x scale

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.