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Finding the Fourth Proportional to 4,990.77, 7,478.82 and 4,626.27

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Solution

The fourth proportional to 4,990.77, 7,478.82 and 4,626.27 is: 6,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.77 : 7,478.82 = 4,626.27 : x
  2. Step 2: Convert to fraction form
    4,990.77/7,478.82 = 4,626.27/x
  3. Step 3: Cross multiply
    4,990.77x = 7,478.82 × 4,626.27
  4. Step 4: Simplify right side
    4,990.77x = 34,599,040.60
  5. Step 5: Solve for x
    x = 34,599,040.60/4,990.77
  6. Step 6: Final answer
    x = 6,932.61

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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.