Home / 3,609.64-5,415.90-2,878.12

Finding the Fourth Proportional to 3,609.64, 5,415.90 and 2,878.12

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Solution

The fourth proportional to 3,609.64, 5,415.90 and 2,878.12 is: 4,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.64 : 5,415.90 = 2,878.12 : x
  2. Step 2: Convert to fraction form
    3,609.64/5,415.90 = 2,878.12/x
  3. Step 3: Cross multiply
    3,609.64x = 5,415.90 × 2,878.12
  4. Step 4: Simplify right side
    3,609.64x = 15,587,610.11
  5. Step 5: Solve for x
    x = 15,587,610.11/3,609.64
  6. Step 6: Final answer
    x = 4,318.33

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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.