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Finding the Fourth Proportional to 6,390.11, 9,590.11 and 4,429.46

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Solution

The fourth proportional to 6,390.11, 9,590.11 and 4,429.46 is: 6,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.11 : 9,590.11 = 4,429.46 : x
  2. Step 2: Convert to fraction form
    6,390.11/9,590.11 = 4,429.46/x
  3. Step 3: Cross multiply
    6,390.11x = 9,590.11 × 4,429.46
  4. Step 4: Simplify right side
    6,390.11x = 42,479,021.54
  5. Step 5: Solve for x
    x = 42,479,021.54/6,390.11
  6. Step 6: Final answer
    x = 6,647.62

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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.