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Finding the Fourth Proportional to 7,648.98, 10,551.12 and 4,811.88

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Solution

The fourth proportional to 7,648.98, 10,551.12 and 4,811.88 is: 6,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,648.98 : 10,551.12 = 4,811.88 : x
  2. Step 2: Convert to fraction form
    7,648.98/10,551.12 = 4,811.88/x
  3. Step 3: Cross multiply
    7,648.98x = 10,551.12 × 4,811.88
  4. Step 4: Simplify right side
    7,648.98x = 50,770,723.31
  5. Step 5: Solve for x
    x = 50,770,723.31/7,648.98
  6. Step 6: Final answer
    x = 6,637.58

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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.