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Finding the Fourth Proportional to 3,152.54, 4,727.70 and 930.75

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Solution

The fourth proportional to 3,152.54, 4,727.70 and 930.75 is: 1,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,152.54 : 4,727.70 = 930.75 : x
  2. Step 2: Convert to fraction form
    3,152.54/4,727.70 = 930.75/x
  3. Step 3: Cross multiply
    3,152.54x = 4,727.70 × 930.75
  4. Step 4: Simplify right side
    3,152.54x = 4,400,306.78
  5. Step 5: Solve for x
    x = 4,400,306.78/3,152.54
  6. Step 6: Final answer
    x = 1,395.80

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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.