Home / 2,785.13-4,178.10-910.43

Finding the Fourth Proportional to 2,785.13, 4,178.10 and 910.43

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Solution

The fourth proportional to 2,785.13, 4,178.10 and 910.43 is: 1,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.13 : 4,178.10 = 910.43 : x
  2. Step 2: Convert to fraction form
    2,785.13/4,178.10 = 910.43/x
  3. Step 3: Cross multiply
    2,785.13x = 4,178.10 × 910.43
  4. Step 4: Simplify right side
    2,785.13x = 3,803,846.69
  5. Step 5: Solve for x
    x = 3,803,846.69/2,785.13
  6. Step 6: Final answer
    x = 1,365.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.