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Finding the Fourth Proportional to 3,128.53, 4,693.55 and 937.24

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Solution

The fourth proportional to 3,128.53, 4,693.55 and 937.24 is: 1,406.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.53 : 4,693.55 = 937.24 : x
  2. Step 2: Convert to fraction form
    3,128.53/4,693.55 = 937.24/x
  3. Step 3: Cross multiply
    3,128.53x = 4,693.55 × 937.24
  4. Step 4: Simplify right side
    3,128.53x = 4,398,982.80
  5. Step 5: Solve for x
    x = 4,398,982.80/3,128.53
  6. Step 6: Final answer
    x = 1,406.09

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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.