Home / 7,785.12-11,656.80-4,857.60

Finding the Fourth Proportional to 7,785.12, 11,656.80 and 4,857.60

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Solution

The fourth proportional to 7,785.12, 11,656.80 and 4,857.60 is: 7,273.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.12 : 11,656.80 = 4,857.60 : x
  2. Step 2: Convert to fraction form
    7,785.12/11,656.80 = 4,857.60/x
  3. Step 3: Cross multiply
    7,785.12x = 11,656.80 × 4,857.60
  4. Step 4: Simplify right side
    7,785.12x = 56,624,071.68
  5. Step 5: Solve for x
    x = 56,624,071.68/7,785.12
  6. Step 6: Final answer
    x = 7,273.37

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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.