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Finding the Fourth Proportional to 7,990.96, 12,007.68 and 4,295.92

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Solution

The fourth proportional to 7,990.96, 12,007.68 and 4,295.92 is: 6,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.96 : 12,007.68 = 4,295.92 : x
  2. Step 2: Convert to fraction form
    7,990.96/12,007.68 = 4,295.92/x
  3. Step 3: Cross multiply
    7,990.96x = 12,007.68 × 4,295.92
  4. Step 4: Simplify right side
    7,990.96x = 51,584,032.67
  5. Step 5: Solve for x
    x = 51,584,032.67/7,990.96
  6. Step 6: Final answer
    x = 6,455.30

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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.