Home / 4,812.90-7,220.04-2,181.30

Finding the Fourth Proportional to 4,812.90, 7,220.04 and 2,181.30

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Solution

The fourth proportional to 4,812.90, 7,220.04 and 2,181.30 is: 3,272.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.90 : 7,220.04 = 2,181.30 : x
  2. Step 2: Convert to fraction form
    4,812.90/7,220.04 = 2,181.30/x
  3. Step 3: Cross multiply
    4,812.90x = 7,220.04 × 2,181.30
  4. Step 4: Simplify right side
    4,812.90x = 15,749,073.25
  5. Step 5: Solve for x
    x = 15,749,073.25/4,812.90
  6. Step 6: Final answer
    x = 3,272.26

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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.