Home / 2,897.25-3,998.29-1,638.36

Finding the Fourth Proportional to 2,897.25, 3,998.29 and 1,638.36

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Solution

The fourth proportional to 2,897.25, 3,998.29 and 1,638.36 is: 2,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.25 : 3,998.29 = 1,638.36 : x
  2. Step 2: Convert to fraction form
    2,897.25/3,998.29 = 1,638.36/x
  3. Step 3: Cross multiply
    2,897.25x = 3,998.29 × 1,638.36
  4. Step 4: Simplify right side
    2,897.25x = 6,550,638.40
  5. Step 5: Solve for x
    x = 6,550,638.40/2,897.25
  6. Step 6: Final answer
    x = 2,260.98

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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.