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Finding the Fourth Proportional to 2,684.62, 4,026.89 and 930.90

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Solution

The fourth proportional to 2,684.62, 4,026.89 and 930.90 is: 1,396.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,684.62 : 4,026.89 = 930.90 : x
  2. Step 2: Convert to fraction form
    2,684.62/4,026.89 = 930.90/x
  3. Step 3: Cross multiply
    2,684.62x = 4,026.89 × 930.90
  4. Step 4: Simplify right side
    2,684.62x = 3,748,631.90
  5. Step 5: Solve for x
    x = 3,748,631.90/2,684.62
  6. Step 6: Final answer
    x = 1,396.34

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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.