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Finding the Fourth Proportional to 4,699.80, 7,049.70 and 4,246.20

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Solution

The fourth proportional to 4,699.80, 7,049.70 and 4,246.20 is: 6,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,699.80 : 7,049.70 = 4,246.20 : x
  2. Step 2: Convert to fraction form
    4,699.80/7,049.70 = 4,246.20/x
  3. Step 3: Cross multiply
    4,699.80x = 7,049.70 × 4,246.20
  4. Step 4: Simplify right side
    4,699.80x = 29,934,436.14
  5. Step 5: Solve for x
    x = 29,934,436.14/4,699.80
  6. Step 6: Final answer
    x = 6,369.30

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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.