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Finding the Fourth Proportional to 9,279.77, 13,920.24 and 3,040.43

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Solution

The fourth proportional to 9,279.77, 13,920.24 and 3,040.43 is: 4,560.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.77 : 13,920.24 = 3,040.43 : x
  2. Step 2: Convert to fraction form
    9,279.77/13,920.24 = 3,040.43/x
  3. Step 3: Cross multiply
    9,279.77x = 13,920.24 × 3,040.43
  4. Step 4: Simplify right side
    9,279.77x = 42,323,515.30
  5. Step 5: Solve for x
    x = 42,323,515.30/9,279.77
  6. Step 6: Final answer
    x = 4,560.84

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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.