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Finding the Fourth Proportional to 5,508.75, 7,602 and 2,990.87

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Solution

The fourth proportional to 5,508.75, 7,602 and 2,990.87 is: 4,127.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,508.75 : 7,602 = 2,990.87 : x
  2. Step 2: Convert to fraction form
    5,508.75/7,602 = 2,990.87/x
  3. Step 3: Cross multiply
    5,508.75x = 7,602 × 2,990.87
  4. Step 4: Simplify right side
    5,508.75x = 22,736,555.73
  5. Step 5: Solve for x
    x = 22,736,555.73/5,508.75
  6. Step 6: Final answer
    x = 4,127.35

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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.