Home / 2,858.48-3,945.78-1,863.99

Finding the Fourth Proportional to 2,858.48, 3,945.78 and 1,863.99

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Solution

The fourth proportional to 2,858.48, 3,945.78 and 1,863.99 is: 2,573.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.48 : 3,945.78 = 1,863.99 : x
  2. Step 2: Convert to fraction form
    2,858.48/3,945.78 = 1,863.99/x
  3. Step 3: Cross multiply
    2,858.48x = 3,945.78 × 1,863.99
  4. Step 4: Simplify right side
    2,858.48x = 7,354,894.46
  5. Step 5: Solve for x
    x = 7,354,894.46/2,858.48
  6. Step 6: Final answer
    x = 2,573.01

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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.