Home / 4,785.13-7,178.10-1,664.20

Finding the Fourth Proportional to 4,785.13, 7,178.10 and 1,664.20

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Solution

The fourth proportional to 4,785.13, 7,178.10 and 1,664.20 is: 2,496.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.13 : 7,178.10 = 1,664.20 : x
  2. Step 2: Convert to fraction form
    4,785.13/7,178.10 = 1,664.20/x
  3. Step 3: Cross multiply
    4,785.13x = 7,178.10 × 1,664.20
  4. Step 4: Simplify right side
    4,785.13x = 11,945,794.02
  5. Step 5: Solve for x
    x = 11,945,794.02/4,785.13
  6. Step 6: Final answer
    x = 2,496.44

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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.