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Finding the Fourth Proportional to 4,480.79, 6,721.21 and 1,559.09

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Solution

The fourth proportional to 4,480.79, 6,721.21 and 1,559.09 is: 2,338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,480.79 : 6,721.21 = 1,559.09 : x
  2. Step 2: Convert to fraction form
    4,480.79/6,721.21 = 1,559.09/x
  3. Step 3: Cross multiply
    4,480.79x = 6,721.21 × 1,559.09
  4. Step 4: Simplify right side
    4,480.79x = 10,478,982.04
  5. Step 5: Solve for x
    x = 10,478,982.04/4,480.79
  6. Step 6: Final answer
    x = 2,338.65

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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.