Home / 2,858.28-3,945.31-1,663.62

Finding the Fourth Proportional to 2,858.28, 3,945.31 and 1,663.62

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Solution

The fourth proportional to 2,858.28, 3,945.31 and 1,663.62 is: 2,296.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.28 : 3,945.31 = 1,663.62 : x
  2. Step 2: Convert to fraction form
    2,858.28/3,945.31 = 1,663.62/x
  3. Step 3: Cross multiply
    2,858.28x = 3,945.31 × 1,663.62
  4. Step 4: Simplify right side
    2,858.28x = 6,563,496.62
  5. Step 5: Solve for x
    x = 6,563,496.62/2,858.28
  6. Step 6: Final answer
    x = 2,296.31

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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.