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Finding the Fourth Proportional to 8,989.90, 13,483.16 and 2,748.22

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Solution

The fourth proportional to 8,989.90, 13,483.16 and 2,748.22 is: 4,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.90 : 13,483.16 = 2,748.22 : x
  2. Step 2: Convert to fraction form
    8,989.90/13,483.16 = 2,748.22/x
  3. Step 3: Cross multiply
    8,989.90x = 13,483.16 × 2,748.22
  4. Step 4: Simplify right side
    8,989.90x = 37,054,689.98
  5. Step 5: Solve for x
    x = 37,054,689.98/8,989.90
  6. Step 6: Final answer
    x = 4,121.81

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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.