Home / 3,211.02-4,819.05-1,478.70

Finding the Fourth Proportional to 3,211.02, 4,819.05 and 1,478.70

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Solution

The fourth proportional to 3,211.02, 4,819.05 and 1,478.70 is: 2,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.02 : 4,819.05 = 1,478.70 : x
  2. Step 2: Convert to fraction form
    3,211.02/4,819.05 = 1,478.70/x
  3. Step 3: Cross multiply
    3,211.02x = 4,819.05 × 1,478.70
  4. Step 4: Simplify right side
    3,211.02x = 7,125,929.24
  5. Step 5: Solve for x
    x = 7,125,929.24/3,211.02
  6. Step 6: Final answer
    x = 2,219.21

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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.