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Finding the Fourth Proportional to 1,907.96, 2,861.73 and 931.10

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Solution

The fourth proportional to 1,907.96, 2,861.73 and 931.10 is: 1,396.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.96 : 2,861.73 = 931.10 : x
  2. Step 2: Convert to fraction form
    1,907.96/2,861.73 = 931.10/x
  3. Step 3: Cross multiply
    1,907.96x = 2,861.73 × 931.10
  4. Step 4: Simplify right side
    1,907.96x = 2,664,542.49
  5. Step 5: Solve for x
    x = 2,664,542.49/1,907.96
  6. Step 6: Final answer
    x = 1,396.54

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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.