Home / 4,721.70-7,079.16-2,221.49

Finding the Fourth Proportional to 4,721.70, 7,079.16 and 2,221.49

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Solution

The fourth proportional to 4,721.70, 7,079.16 and 2,221.49 is: 3,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.70 : 7,079.16 = 2,221.49 : x
  2. Step 2: Convert to fraction form
    4,721.70/7,079.16 = 2,221.49/x
  3. Step 3: Cross multiply
    4,721.70x = 7,079.16 × 2,221.49
  4. Step 4: Simplify right side
    4,721.70x = 15,726,283.15
  5. Step 5: Solve for x
    x = 15,726,283.15/4,721.70
  6. Step 6: Final answer
    x = 3,330.64

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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.