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Finding the Fourth Proportional to 8,693.97, 13,041.09 and 2,120.28

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Solution

The fourth proportional to 8,693.97, 13,041.09 and 2,120.28 is: 3,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.97 : 13,041.09 = 2,120.28 : x
  2. Step 2: Convert to fraction form
    8,693.97/13,041.09 = 2,120.28/x
  3. Step 3: Cross multiply
    8,693.97x = 13,041.09 × 2,120.28
  4. Step 4: Simplify right side
    8,693.97x = 27,650,762.31
  5. Step 5: Solve for x
    x = 27,650,762.31/8,693.97
  6. Step 6: Final answer
    x = 3,180.45

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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.