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Finding the Fourth Proportional to 8,878.90, 13,309.16 and 3,328.34

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Solution

The fourth proportional to 8,878.90, 13,309.16 and 3,328.34 is: 4,989.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.90 : 13,309.16 = 3,328.34 : x
  2. Step 2: Convert to fraction form
    8,878.90/13,309.16 = 3,328.34/x
  3. Step 3: Cross multiply
    8,878.90x = 13,309.16 × 3,328.34
  4. Step 4: Simplify right side
    8,878.90x = 44,297,409.59
  5. Step 5: Solve for x
    x = 44,297,409.59/8,878.90
  6. Step 6: Final answer
    x = 4,989.07

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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.