Home / 2,905.61-4,005.76-1,997.09

Finding the Fourth Proportional to 2,905.61, 4,005.76 and 1,997.09

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Solution

The fourth proportional to 2,905.61, 4,005.76 and 1,997.09 is: 2,753.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.61 : 4,005.76 = 1,997.09 : x
  2. Step 2: Convert to fraction form
    2,905.61/4,005.76 = 1,997.09/x
  3. Step 3: Cross multiply
    2,905.61x = 4,005.76 × 1,997.09
  4. Step 4: Simplify right side
    2,905.61x = 7,999,863.24
  5. Step 5: Solve for x
    x = 7,999,863.24/2,905.61
  6. Step 6: Final answer
    x = 2,753.25

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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.