Home / 5,220.78-7,206.20-3,230.61

Finding the Fourth Proportional to 5,220.78, 7,206.20 and 3,230.61

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Solution

The fourth proportional to 5,220.78, 7,206.20 and 3,230.61 is: 4,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.78 : 7,206.20 = 3,230.61 : x
  2. Step 2: Convert to fraction form
    5,220.78/7,206.20 = 3,230.61/x
  3. Step 3: Cross multiply
    5,220.78x = 7,206.20 × 3,230.61
  4. Step 4: Simplify right side
    5,220.78x = 23,280,421.78
  5. Step 5: Solve for x
    x = 23,280,421.78/5,220.78
  6. Step 6: Final answer
    x = 4,459.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.