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Finding the Fourth Proportional to 2,574.30, 3,861.64 and 930.84

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Solution

The fourth proportional to 2,574.30, 3,861.64 and 930.84 is: 1,396.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,574.30 : 3,861.64 = 930.84 : x
  2. Step 2: Convert to fraction form
    2,574.30/3,861.64 = 930.84/x
  3. Step 3: Cross multiply
    2,574.30x = 3,861.64 × 930.84
  4. Step 4: Simplify right side
    2,574.30x = 3,594,568.98
  5. Step 5: Solve for x
    x = 3,594,568.98/2,574.30
  6. Step 6: Final answer
    x = 1,396.33

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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.