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Finding the Fourth Proportional to 2,812.65, 4,217.56 and 937.88

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Solution

The fourth proportional to 2,812.65, 4,217.56 and 937.88 is: 1,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.65 : 4,217.56 = 937.88 : x
  2. Step 2: Convert to fraction form
    2,812.65/4,217.56 = 937.88/x
  3. Step 3: Cross multiply
    2,812.65x = 4,217.56 × 937.88
  4. Step 4: Simplify right side
    2,812.65x = 3,955,548.33
  5. Step 5: Solve for x
    x = 3,955,548.33/2,812.65
  6. Step 6: Final answer
    x = 1,406.34

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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.