Home / 3,608.64-5,411.04-2,128.38

Finding the Fourth Proportional to 3,608.64, 5,411.04 and 2,128.38

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Solution

The fourth proportional to 3,608.64, 5,411.04 and 2,128.38 is: 3,191.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.64 : 5,411.04 = 2,128.38 : x
  2. Step 2: Convert to fraction form
    3,608.64/5,411.04 = 2,128.38/x
  3. Step 3: Cross multiply
    3,608.64x = 5,411.04 × 2,128.38
  4. Step 4: Simplify right side
    3,608.64x = 11,516,749.32
  5. Step 5: Solve for x
    x = 11,516,749.32/3,608.64
  6. Step 6: Final answer
    x = 3,191.44

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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.