Home / 2,786.78-3,845.65-1,527.81

Finding the Fourth Proportional to 2,786.78, 3,845.65 and 1,527.81

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Solution

The fourth proportional to 2,786.78, 3,845.65 and 1,527.81 is: 2,108.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.78 : 3,845.65 = 1,527.81 : x
  2. Step 2: Convert to fraction form
    2,786.78/3,845.65 = 1,527.81/x
  3. Step 3: Cross multiply
    2,786.78x = 3,845.65 × 1,527.81
  4. Step 4: Simplify right side
    2,786.78x = 5,875,412.88
  5. Step 5: Solve for x
    x = 5,875,412.88/2,786.78
  6. Step 6: Final answer
    x = 2,108.32

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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.