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Finding the Fourth Proportional to 4,665.60, 7,005.60 and 3,211.20

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Solution

The fourth proportional to 4,665.60, 7,005.60 and 3,211.20 is: 4,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,665.60 : 7,005.60 = 3,211.20 : x
  2. Step 2: Convert to fraction form
    4,665.60/7,005.60 = 3,211.20/x
  3. Step 3: Cross multiply
    4,665.60x = 7,005.60 × 3,211.20
  4. Step 4: Simplify right side
    4,665.60x = 22,496,382.72
  5. Step 5: Solve for x
    x = 22,496,382.72/4,665.60
  6. Step 6: Final answer
    x = 4,821.76

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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.