Home / 5,509.78-8,264.63-2,220.55

Finding the Fourth Proportional to 5,509.78, 8,264.63 and 2,220.55

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Solution

The fourth proportional to 5,509.78, 8,264.63 and 2,220.55 is: 3,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.78 : 8,264.63 = 2,220.55 : x
  2. Step 2: Convert to fraction form
    5,509.78/8,264.63 = 2,220.55/x
  3. Step 3: Cross multiply
    5,509.78x = 8,264.63 × 2,220.55
  4. Step 4: Simplify right side
    5,509.78x = 18,351,982.82
  5. Step 5: Solve for x
    x = 18,351,982.82/5,509.78
  6. Step 6: Final answer
    x = 3,330.80

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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.