Home / 5,318.14-7,980.86-1,855.39

Finding the Fourth Proportional to 5,318.14, 7,980.86 and 1,855.39

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Solution

The fourth proportional to 5,318.14, 7,980.86 and 1,855.39 is: 2,784.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.14 : 7,980.86 = 1,855.39 : x
  2. Step 2: Convert to fraction form
    5,318.14/7,980.86 = 1,855.39/x
  3. Step 3: Cross multiply
    5,318.14x = 7,980.86 × 1,855.39
  4. Step 4: Simplify right side
    5,318.14x = 14,807,610.85
  5. Step 5: Solve for x
    x = 14,807,610.85/5,318.14
  6. Step 6: Final answer
    x = 2,784.36

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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.