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Finding the Fourth Proportional to 3,609.99, 5,405.15 and 1,874.97

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Solution

The fourth proportional to 3,609.99, 5,405.15 and 1,874.97 is: 2,807.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.99 : 5,405.15 = 1,874.97 : x
  2. Step 2: Convert to fraction form
    3,609.99/5,405.15 = 1,874.97/x
  3. Step 3: Cross multiply
    3,609.99x = 5,405.15 × 1,874.97
  4. Step 4: Simplify right side
    3,609.99x = 10,134,484.72
  5. Step 5: Solve for x
    x = 10,134,484.72/3,609.99
  6. Step 6: Final answer
    x = 2,807.34

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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.