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Finding the Fourth Proportional to 1,740.11, 2,401.45 and 994.30

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Solution

The fourth proportional to 1,740.11, 2,401.45 and 994.30 is: 1,372.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.11 : 2,401.45 = 994.30 : x
  2. Step 2: Convert to fraction form
    1,740.11/2,401.45 = 994.30/x
  3. Step 3: Cross multiply
    1,740.11x = 2,401.45 × 994.30
  4. Step 4: Simplify right side
    1,740.11x = 2,387,753.25
  5. Step 5: Solve for x
    x = 2,387,753.25/1,740.11
  6. Step 6: Final answer
    x = 1,372.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.