Home / 2,905.85-4,010.45-1,647.11

Finding the Fourth Proportional to 2,905.85, 4,010.45 and 1,647.11

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Solution

The fourth proportional to 2,905.85, 4,010.45 and 1,647.11 is: 2,273.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.85 : 4,010.45 = 1,647.11 : x
  2. Step 2: Convert to fraction form
    2,905.85/4,010.45 = 1,647.11/x
  3. Step 3: Cross multiply
    2,905.85x = 4,010.45 × 1,647.11
  4. Step 4: Simplify right side
    2,905.85x = 6,605,654.09
  5. Step 5: Solve for x
    x = 6,605,654.09/2,905.85
  6. Step 6: Final answer
    x = 2,273.22

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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.