Home / 7,840.49-11,760.66-1,917.39

Finding the Fourth Proportional to 7,840.49, 11,760.66 and 1,917.39

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Solution

The fourth proportional to 7,840.49, 11,760.66 and 1,917.39 is: 2,876.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.49 : 11,760.66 = 1,917.39 : x
  2. Step 2: Convert to fraction form
    7,840.49/11,760.66 = 1,917.39/x
  3. Step 3: Cross multiply
    7,840.49x = 11,760.66 × 1,917.39
  4. Step 4: Simplify right side
    7,840.49x = 22,549,771.88
  5. Step 5: Solve for x
    x = 22,549,771.88/7,840.49
  6. Step 6: Final answer
    x = 2,876.07

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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.