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Finding the Fourth Proportional to 8,993.70, 13,489.34 and 2,420.28

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Solution

The fourth proportional to 8,993.70, 13,489.34 and 2,420.28 is: 3,630.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.70 : 13,489.34 = 2,420.28 : x
  2. Step 2: Convert to fraction form
    8,993.70/13,489.34 = 2,420.28/x
  3. Step 3: Cross multiply
    8,993.70x = 13,489.34 × 2,420.28
  4. Step 4: Simplify right side
    8,993.70x = 32,647,967.71
  5. Step 5: Solve for x
    x = 32,647,967.71/8,993.70
  6. Step 6: Final answer
    x = 3,630.09

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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.