Home / 3,630.51-5,013.61-3,128.44

Finding the Fourth Proportional to 3,630.51, 5,013.61 and 3,128.44

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Solution

The fourth proportional to 3,630.51, 5,013.61 and 3,128.44 is: 4,320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.51 : 5,013.61 = 3,128.44 : x
  2. Step 2: Convert to fraction form
    3,630.51/5,013.61 = 3,128.44/x
  3. Step 3: Cross multiply
    3,630.51x = 5,013.61 × 3,128.44
  4. Step 4: Simplify right side
    3,630.51x = 15,684,760.26
  5. Step 5: Solve for x
    x = 15,684,760.26/3,630.51
  6. Step 6: Final answer
    x = 4,320.27

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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.