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Finding the Fourth Proportional to 2,933.75, 4,400.21 and 742.34

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Solution

The fourth proportional to 2,933.75, 4,400.21 and 742.34 is: 1,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,933.75 : 4,400.21 = 742.34 : x
  2. Step 2: Convert to fraction form
    2,933.75/4,400.21 = 742.34/x
  3. Step 3: Cross multiply
    2,933.75x = 4,400.21 × 742.34
  4. Step 4: Simplify right side
    2,933.75x = 3,266,426.18
  5. Step 5: Solve for x
    x = 3,266,426.18/2,933.75
  6. Step 6: Final answer
    x = 1,113.40

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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.