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Finding the Fourth Proportional to 7,221.58, 10,850.64 and 6,929.98

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Solution

The fourth proportional to 7,221.58, 10,850.64 and 6,929.98 is: 10,412.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.58 : 10,850.64 = 6,929.98 : x
  2. Step 2: Convert to fraction form
    7,221.58/10,850.64 = 6,929.98/x
  3. Step 3: Cross multiply
    7,221.58x = 10,850.64 × 6,929.98
  4. Step 4: Simplify right side
    7,221.58x = 75,194,718.19
  5. Step 5: Solve for x
    x = 75,194,718.19/7,221.58
  6. Step 6: Final answer
    x = 10,412.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.