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Finding the Fourth Proportional to 8,348.24, 11,520.42 and 4,811.12

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Solution

The fourth proportional to 8,348.24, 11,520.42 and 4,811.12 is: 6,639.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.24 : 11,520.42 = 4,811.12 : x
  2. Step 2: Convert to fraction form
    8,348.24/11,520.42 = 4,811.12/x
  3. Step 3: Cross multiply
    8,348.24x = 11,520.42 × 4,811.12
  4. Step 4: Simplify right side
    8,348.24x = 55,426,123.07
  5. Step 5: Solve for x
    x = 55,426,123.07/8,348.24
  6. Step 6: Final answer
    x = 6,639.26

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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.