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Finding the Fourth Proportional to 8,124.48, 11,211.84 and 4,812.48

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Solution

The fourth proportional to 8,124.48, 11,211.84 and 4,812.48 is: 6,641.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.48 : 11,211.84 = 4,812.48 : x
  2. Step 2: Convert to fraction form
    8,124.48/11,211.84 = 4,812.48/x
  3. Step 3: Cross multiply
    8,124.48x = 11,211.84 × 4,812.48
  4. Step 4: Simplify right side
    8,124.48x = 53,956,755.76
  5. Step 5: Solve for x
    x = 53,956,755.76/8,124.48
  6. Step 6: Final answer
    x = 6,641.26

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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.