Home / 5,212.19-7,818.31-1,316.60

Finding the Fourth Proportional to 5,212.19, 7,818.31 and 1,316.60

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Solution

The fourth proportional to 5,212.19, 7,818.31 and 1,316.60 is: 1,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.19 : 7,818.31 = 1,316.60 : x
  2. Step 2: Convert to fraction form
    5,212.19/7,818.31 = 1,316.60/x
  3. Step 3: Cross multiply
    5,212.19x = 7,818.31 × 1,316.60
  4. Step 4: Simplify right side
    5,212.19x = 10,293,578.82
  5. Step 5: Solve for x
    x = 10,293,578.82/5,212.19
  6. Step 6: Final answer
    x = 1,974.90

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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.