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Finding the Fourth Proportional to 8,612.88, 11,883.56 and 5,255.46

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Solution

The fourth proportional to 8,612.88, 11,883.56 and 5,255.46 is: 7,251.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.88 : 11,883.56 = 5,255.46 : x
  2. Step 2: Convert to fraction form
    8,612.88/11,883.56 = 5,255.46/x
  3. Step 3: Cross multiply
    8,612.88x = 11,883.56 × 5,255.46
  4. Step 4: Simplify right side
    8,612.88x = 62,453,574.24
  5. Step 5: Solve for x
    x = 62,453,574.24/8,612.88
  6. Step 6: Final answer
    x = 7,251.18

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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.