Home / 7,990.45-11,026.79-4,635.21

Finding the Fourth Proportional to 7,990.45, 11,026.79 and 4,635.21

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Solution

The fourth proportional to 7,990.45, 11,026.79 and 4,635.21 is: 6,396.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.45 : 11,026.79 = 4,635.21 : x
  2. Step 2: Convert to fraction form
    7,990.45/11,026.79 = 4,635.21/x
  3. Step 3: Cross multiply
    7,990.45x = 11,026.79 × 4,635.21
  4. Step 4: Simplify right side
    7,990.45x = 51,111,487.28
  5. Step 5: Solve for x
    x = 51,111,487.28/7,990.45
  6. Step 6: Final answer
    x = 6,396.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.