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Finding the Fourth Proportional to 7,718.69, 10,648.67 and 4,729.39

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Solution

The fourth proportional to 7,718.69, 10,648.67 and 4,729.39 is: 6,524.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.69 : 10,648.67 = 4,729.39 : x
  2. Step 2: Convert to fraction form
    7,718.69/10,648.67 = 4,729.39/x
  3. Step 3: Cross multiply
    7,718.69x = 10,648.67 × 4,729.39
  4. Step 4: Simplify right side
    7,718.69x = 50,361,663.14
  5. Step 5: Solve for x
    x = 50,361,663.14/7,718.69
  6. Step 6: Final answer
    x = 6,524.64

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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.