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Finding the Fourth Proportional to 8,813.43, 13,220.19 and 2,970.09

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Solution

The fourth proportional to 8,813.43, 13,220.19 and 2,970.09 is: 4,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.43 : 13,220.19 = 2,970.09 : x
  2. Step 2: Convert to fraction form
    8,813.43/13,220.19 = 2,970.09/x
  3. Step 3: Cross multiply
    8,813.43x = 13,220.19 × 2,970.09
  4. Step 4: Simplify right side
    8,813.43x = 39,265,154.12
  5. Step 5: Solve for x
    x = 39,265,154.12/8,813.43
  6. Step 6: Final answer
    x = 4,455.15

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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.