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Finding the Fourth Proportional to 3,609.08, 4,977.77 and 2,491.89

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Solution

The fourth proportional to 3,609.08, 4,977.77 and 2,491.89 is: 3,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.08 : 4,977.77 = 2,491.89 : x
  2. Step 2: Convert to fraction form
    3,609.08/4,977.77 = 2,491.89/x
  3. Step 3: Cross multiply
    3,609.08x = 4,977.77 × 2,491.89
  4. Step 4: Simplify right side
    3,609.08x = 12,404,038.18
  5. Step 5: Solve for x
    x = 12,404,038.18/3,609.08
  6. Step 6: Final answer
    x = 3,436.90

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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.