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Finding the Fourth Proportional to 3,709.62, 5,567.13 and 2,987.91

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Solution

The fourth proportional to 3,709.62, 5,567.13 and 2,987.91 is: 4,484.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.62 : 5,567.13 = 2,987.91 : x
  2. Step 2: Convert to fraction form
    3,709.62/5,567.13 = 2,987.91/x
  3. Step 3: Cross multiply
    3,709.62x = 5,567.13 × 2,987.91
  4. Step 4: Simplify right side
    3,709.62x = 16,634,083.40
  5. Step 5: Solve for x
    x = 16,634,083.40/3,709.62
  6. Step 6: Final answer
    x = 4,484.04

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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.