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Finding the Fourth Proportional to 6,276.54, 8,654.54 and 5,138.66

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Solution

The fourth proportional to 6,276.54, 8,654.54 and 5,138.66 is: 7,085.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,276.54 : 8,654.54 = 5,138.66 : x
  2. Step 2: Convert to fraction form
    6,276.54/8,654.54 = 5,138.66/x
  3. Step 3: Cross multiply
    6,276.54x = 8,654.54 × 5,138.66
  4. Step 4: Simplify right side
    6,276.54x = 44,472,738.52
  5. Step 5: Solve for x
    x = 44,472,738.52/6,276.54
  6. Step 6: Final answer
    x = 7,085.55

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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.