Home / 5,728.26-7,905.36-3,210.21

Finding the Fourth Proportional to 5,728.26, 7,905.36 and 3,210.21

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Solution

The fourth proportional to 5,728.26, 7,905.36 and 3,210.21 is: 4,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728.26 : 7,905.36 = 3,210.21 : x
  2. Step 2: Convert to fraction form
    5,728.26/7,905.36 = 3,210.21/x
  3. Step 3: Cross multiply
    5,728.26x = 7,905.36 × 3,210.21
  4. Step 4: Simplify right side
    5,728.26x = 25,377,865.73
  5. Step 5: Solve for x
    x = 25,377,865.73/5,728.26
  6. Step 6: Final answer
    x = 4,430.29

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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.