Home / 5,260.14-7,890.01-1,311.39

Finding the Fourth Proportional to 5,260.14, 7,890.01 and 1,311.39

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Solution

The fourth proportional to 5,260.14, 7,890.01 and 1,311.39 is: 1,967.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.14 : 7,890.01 = 1,311.39 : x
  2. Step 2: Convert to fraction form
    5,260.14/7,890.01 = 1,311.39/x
  3. Step 3: Cross multiply
    5,260.14x = 7,890.01 × 1,311.39
  4. Step 4: Simplify right side
    5,260.14x = 10,346,876.94
  5. Step 5: Solve for x
    x = 10,346,876.94/5,260.14
  6. Step 6: Final answer
    x = 1,967.03

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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.