Home / 2,897.36-3,990.32-2,693.28

Finding the Fourth Proportional to 2,897.36, 3,990.32 and 2,693.28

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Solution

The fourth proportional to 2,897.36, 3,990.32 and 2,693.28 is: 3,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.36 : 3,990.32 = 2,693.28 : x
  2. Step 2: Convert to fraction form
    2,897.36/3,990.32 = 2,693.28/x
  3. Step 3: Cross multiply
    2,897.36x = 3,990.32 × 2,693.28
  4. Step 4: Simplify right side
    2,897.36x = 10,747,049.05
  5. Step 5: Solve for x
    x = 10,747,049.05/2,897.36
  6. Step 6: Final answer
    x = 3,709.26

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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.