Home / 3,897.05-5,378.22-2,219.00

Finding the Fourth Proportional to 3,897.05, 5,378.22 and 2,219.00

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Solution

The fourth proportional to 3,897.05, 5,378.22 and 2,219.00 is: 3,062.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.05 : 5,378.22 = 2,219.00 : x
  2. Step 2: Convert to fraction form
    3,897.05/5,378.22 = 2,219.00/x
  3. Step 3: Cross multiply
    3,897.05x = 5,378.22 × 2,219.00
  4. Step 4: Simplify right side
    3,897.05x = 11,934,243.29
  5. Step 5: Solve for x
    x = 11,934,243.29/3,897.05
  6. Step 6: Final answer
    x = 3,062.38

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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.