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Finding the Fourth Proportional to 3,671.55, 5,507.31 and 3,020.91

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Solution

The fourth proportional to 3,671.55, 5,507.31 and 3,020.91 is: 4,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.55 : 5,507.31 = 3,020.91 : x
  2. Step 2: Convert to fraction form
    3,671.55/5,507.31 = 3,020.91/x
  3. Step 3: Cross multiply
    3,671.55x = 5,507.31 × 3,020.91
  4. Step 4: Simplify right side
    3,671.55x = 16,637,087.85
  5. Step 5: Solve for x
    x = 16,637,087.85/3,671.55
  6. Step 6: Final answer
    x = 4,531.35

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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.