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Finding the Fourth Proportional to 7,766.58, 10,718.10 and 4,229.85

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Solution

The fourth proportional to 7,766.58, 10,718.10 and 4,229.85 is: 5,837.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,766.58 : 10,718.10 = 4,229.85 : x
  2. Step 2: Convert to fraction form
    7,766.58/10,718.10 = 4,229.85/x
  3. Step 3: Cross multiply
    7,766.58x = 10,718.10 × 4,229.85
  4. Step 4: Simplify right side
    7,766.58x = 45,335,955.29
  5. Step 5: Solve for x
    x = 45,335,955.29/7,766.58
  6. Step 6: Final answer
    x = 5,837.31

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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.