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Finding the Fourth Proportional to 4,480.55, 6,721.16 and 1,559.09

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Solution

The fourth proportional to 4,480.55, 6,721.16 and 1,559.09 is: 2,338.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,480.55 : 6,721.16 = 1,559.09 : x
  2. Step 2: Convert to fraction form
    4,480.55/6,721.16 = 1,559.09/x
  3. Step 3: Cross multiply
    4,480.55x = 6,721.16 × 1,559.09
  4. Step 4: Simplify right side
    4,480.55x = 10,478,851.94
  5. Step 5: Solve for x
    x = 10,478,851.94/4,480.55
  6. Step 6: Final answer
    x = 2,338.74

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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.