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Finding the Fourth Proportional to 2,581.07, 3,871.40 and 937.99

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Solution

The fourth proportional to 2,581.07, 3,871.40 and 937.99 is: 1,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.07 : 3,871.40 = 937.99 : x
  2. Step 2: Convert to fraction form
    2,581.07/3,871.40 = 937.99/x
  3. Step 3: Cross multiply
    2,581.07x = 3,871.40 × 937.99
  4. Step 4: Simplify right side
    2,581.07x = 3,631,313.96
  5. Step 5: Solve for x
    x = 3,631,313.96/2,581.07
  6. Step 6: Final answer
    x = 1,406.90

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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.