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Finding the Fourth Proportional to 8,810.45, 13,215.50 and 2,146.99

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Solution

The fourth proportional to 8,810.45, 13,215.50 and 2,146.99 is: 3,220.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810.45 : 13,215.50 = 2,146.99 : x
  2. Step 2: Convert to fraction form
    8,810.45/13,215.50 = 2,146.99/x
  3. Step 3: Cross multiply
    8,810.45x = 13,215.50 × 2,146.99
  4. Step 4: Simplify right side
    8,810.45x = 28,373,480.27
  5. Step 5: Solve for x
    x = 28,373,480.27/8,810.45
  6. Step 6: Final answer
    x = 3,220.43

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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.