Home / 5,220.10-7,203.70-2,862.20

Finding the Fourth Proportional to 5,220.10, 7,203.70 and 2,862.20

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Solution

The fourth proportional to 5,220.10, 7,203.70 and 2,862.20 is: 3,949.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.10 : 7,203.70 = 2,862.20 : x
  2. Step 2: Convert to fraction form
    5,220.10/7,203.70 = 2,862.20/x
  3. Step 3: Cross multiply
    5,220.10x = 7,203.70 × 2,862.20
  4. Step 4: Simplify right side
    5,220.10x = 20,618,430.14
  5. Step 5: Solve for x
    x = 20,618,430.14/5,220.10
  6. Step 6: Final answer
    x = 3,949.82

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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.