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Finding the Fourth Proportional to 2,279.36, 3,420.36 and 963.03

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Solution

The fourth proportional to 2,279.36, 3,420.36 and 963.03 is: 1,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.36 : 3,420.36 = 963.03 : x
  2. Step 2: Convert to fraction form
    2,279.36/3,420.36 = 963.03/x
  3. Step 3: Cross multiply
    2,279.36x = 3,420.36 × 963.03
  4. Step 4: Simplify right side
    2,279.36x = 3,293,909.29
  5. Step 5: Solve for x
    x = 3,293,909.29/2,279.36
  6. Step 6: Final answer
    x = 1,445.10

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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.