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Finding the Fourth Proportional to 3,169.34, 4,373.78 and 1,772.09

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Solution

The fourth proportional to 3,169.34, 4,373.78 and 1,772.09 is: 2,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.34 : 4,373.78 = 1,772.09 : x
  2. Step 2: Convert to fraction form
    3,169.34/4,373.78 = 1,772.09/x
  3. Step 3: Cross multiply
    3,169.34x = 4,373.78 × 1,772.09
  4. Step 4: Simplify right side
    3,169.34x = 7,750,701.07
  5. Step 5: Solve for x
    x = 7,750,701.07/3,169.34
  6. Step 6: Final answer
    x = 2,445.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.