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Finding the Fourth Proportional to 3,133.87, 4,701.05 and 942.78

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Solution

The fourth proportional to 3,133.87, 4,701.05 and 942.78 is: 1,414.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.87 : 4,701.05 = 942.78 : x
  2. Step 2: Convert to fraction form
    3,133.87/4,701.05 = 942.78/x
  3. Step 3: Cross multiply
    3,133.87x = 4,701.05 × 942.78
  4. Step 4: Simplify right side
    3,133.87x = 4,432,055.92
  5. Step 5: Solve for x
    x = 4,432,055.92/3,133.87
  6. Step 6: Final answer
    x = 1,414.24

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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.