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Finding the Fourth Proportional to 4,003.80, 5,506.80 and 3,505.58

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Solution

The fourth proportional to 4,003.80, 5,506.80 and 3,505.58 is: 4,821.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,003.80 : 5,506.80 = 3,505.58 : x
  2. Step 2: Convert to fraction form
    4,003.80/5,506.80 = 3,505.58/x
  3. Step 3: Cross multiply
    4,003.80x = 5,506.80 × 3,505.58
  4. Step 4: Simplify right side
    4,003.80x = 19,304,512.84
  5. Step 5: Solve for x
    x = 19,304,512.84/4,003.80
  6. Step 6: Final answer
    x = 4,821.54

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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.