Home / 5,220.80-7,838.48-3,471.20

Finding the Fourth Proportional to 5,220.80, 7,838.48 and 3,471.20

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Solution

The fourth proportional to 5,220.80, 7,838.48 and 3,471.20 is: 5,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.80 : 7,838.48 = 3,471.20 : x
  2. Step 2: Convert to fraction form
    5,220.80/7,838.48 = 3,471.20/x
  3. Step 3: Cross multiply
    5,220.80x = 7,838.48 × 3,471.20
  4. Step 4: Simplify right side
    5,220.80x = 27,208,901.26
  5. Step 5: Solve for x
    x = 27,208,901.26/5,220.80
  6. Step 6: Final answer
    x = 5,211.64

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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.