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Finding the Fourth Proportional to 7,443.70, 11,165.55 and 4,819.30

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Solution

The fourth proportional to 7,443.70, 11,165.55 and 4,819.30 is: 7,228.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,443.70 : 11,165.55 = 4,819.30 : x
  2. Step 2: Convert to fraction form
    7,443.70/11,165.55 = 4,819.30/x
  3. Step 3: Cross multiply
    7,443.70x = 11,165.55 × 4,819.30
  4. Step 4: Simplify right side
    7,443.70x = 53,810,135.12
  5. Step 5: Solve for x
    x = 53,810,135.12/7,443.70
  6. Step 6: Final answer
    x = 7,228.95

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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.