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Finding the Fourth Proportional to 5,482.30, 8,211.30 and 2,193.70

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Solution

The fourth proportional to 5,482.30, 8,211.30 and 2,193.70 is: 3,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,482.30 : 8,211.30 = 2,193.70 : x
  2. Step 2: Convert to fraction form
    5,482.30/8,211.30 = 2,193.70/x
  3. Step 3: Cross multiply
    5,482.30x = 8,211.30 × 2,193.70
  4. Step 4: Simplify right side
    5,482.30x = 18,013,128.81
  5. Step 5: Solve for x
    x = 18,013,128.81/5,482.30
  6. Step 6: Final answer
    x = 3,285.69

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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.