Home / 1,864.22-2,571.89-1,078.11

Finding the Fourth Proportional to 1,864.22, 2,571.89 and 1,078.11

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Solution

The fourth proportional to 1,864.22, 2,571.89 and 1,078.11 is: 1,487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.22 : 2,571.89 = 1,078.11 : x
  2. Step 2: Convert to fraction form
    1,864.22/2,571.89 = 1,078.11/x
  3. Step 3: Cross multiply
    1,864.22x = 2,571.89 × 1,078.11
  4. Step 4: Simplify right side
    1,864.22x = 2,772,774.94
  5. Step 5: Solve for x
    x = 2,772,774.94/1,864.22
  6. Step 6: Final answer
    x = 1,487.37

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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.