Home / 5,220.49-7,204.31-2,830.48

Finding the Fourth Proportional to 5,220.49, 7,204.31 and 2,830.48

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Solution

The fourth proportional to 5,220.49, 7,204.31 and 2,830.48 is: 3,906.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.49 : 7,204.31 = 2,830.48 : x
  2. Step 2: Convert to fraction form
    5,220.49/7,204.31 = 2,830.48/x
  3. Step 3: Cross multiply
    5,220.49x = 7,204.31 × 2,830.48
  4. Step 4: Simplify right side
    5,220.49x = 20,391,655.37
  5. Step 5: Solve for x
    x = 20,391,655.37/5,220.49
  6. Step 6: Final answer
    x = 3,906.08

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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.