Home / 3,639.09-5,458.68-2,913.29

Finding the Fourth Proportional to 3,639.09, 5,458.68 and 2,913.29

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Solution

The fourth proportional to 3,639.09, 5,458.68 and 2,913.29 is: 4,369.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.09 : 5,458.68 = 2,913.29 : x
  2. Step 2: Convert to fraction form
    3,639.09/5,458.68 = 2,913.29/x
  3. Step 3: Cross multiply
    3,639.09x = 5,458.68 × 2,913.29
  4. Step 4: Simplify right side
    3,639.09x = 15,902,690.56
  5. Step 5: Solve for x
    x = 15,902,690.56/3,639.09
  6. Step 6: Final answer
    x = 4,369.96

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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.