Home / 7,875.75-11,809.35-3,918.33

Finding the Fourth Proportional to 7,875.75, 11,809.35 and 3,918.33

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Solution

The fourth proportional to 7,875.75, 11,809.35 and 3,918.33 is: 5,875.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.75 : 11,809.35 = 3,918.33 : x
  2. Step 2: Convert to fraction form
    7,875.75/11,809.35 = 3,918.33/x
  3. Step 3: Cross multiply
    7,875.75x = 11,809.35 × 3,918.33
  4. Step 4: Simplify right side
    7,875.75x = 46,272,930.39
  5. Step 5: Solve for x
    x = 46,272,930.39/7,875.75
  6. Step 6: Final answer
    x = 5,875.37

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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.