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Finding the Fourth Proportional to 8,255.48, 11,390.88 and 4,719.88

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Solution

The fourth proportional to 8,255.48, 11,390.88 and 4,719.88 is: 6,512.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.48 : 11,390.88 = 4,719.88 : x
  2. Step 2: Convert to fraction form
    8,255.48/11,390.88 = 4,719.88/x
  3. Step 3: Cross multiply
    8,255.48x = 11,390.88 × 4,719.88
  4. Step 4: Simplify right side
    8,255.48x = 53,763,586.69
  5. Step 5: Solve for x
    x = 53,763,586.69/8,255.48
  6. Step 6: Final answer
    x = 6,512.47

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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.