Home / 3,128.28-4,693.16-936.98

Finding the Fourth Proportional to 3,128.28, 4,693.16 and 936.98

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Solution

The fourth proportional to 3,128.28, 4,693.16 and 936.98 is: 1,405.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.28 : 4,693.16 = 936.98 : x
  2. Step 2: Convert to fraction form
    3,128.28/4,693.16 = 936.98/x
  3. Step 3: Cross multiply
    3,128.28x = 4,693.16 × 936.98
  4. Step 4: Simplify right side
    3,128.28x = 4,397,397.06
  5. Step 5: Solve for x
    x = 4,397,397.06/3,128.28
  6. Step 6: Final answer
    x = 1,405.69

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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.