Home / 3,128.02-4,691.12-936.16

Finding the Fourth Proportional to 3,128.02, 4,691.12 and 936.16

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Solution

The fourth proportional to 3,128.02, 4,691.12 and 936.16 is: 1,403.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.02 : 4,691.12 = 936.16 : x
  2. Step 2: Convert to fraction form
    3,128.02/4,691.12 = 936.16/x
  3. Step 3: Cross multiply
    3,128.02x = 4,691.12 × 936.16
  4. Step 4: Simplify right side
    3,128.02x = 4,391,622.49
  5. Step 5: Solve for x
    x = 4,391,622.49/3,128.02
  6. Step 6: Final answer
    x = 1,403.96

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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.