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Finding the Fourth Proportional to 7,219.95, 10,829.97 and 3,699.96

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Solution

The fourth proportional to 7,219.95, 10,829.97 and 3,699.96 is: 5,549.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.95 : 10,829.97 = 3,699.96 : x
  2. Step 2: Convert to fraction form
    7,219.95/10,829.97 = 3,699.96/x
  3. Step 3: Cross multiply
    7,219.95x = 10,829.97 × 3,699.96
  4. Step 4: Simplify right side
    7,219.95x = 40,070,455.80
  5. Step 5: Solve for x
    x = 40,070,455.80/7,219.95
  6. Step 6: Final answer
    x = 5,549.96

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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.