Home / 7,829.15-11,744.13-1,985.81

Finding the Fourth Proportional to 7,829.15, 11,744.13 and 1,985.81

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Solution

The fourth proportional to 7,829.15, 11,744.13 and 1,985.81 is: 2,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.15 : 11,744.13 = 1,985.81 : x
  2. Step 2: Convert to fraction form
    7,829.15/11,744.13 = 1,985.81/x
  3. Step 3: Cross multiply
    7,829.15x = 11,744.13 × 1,985.81
  4. Step 4: Simplify right side
    7,829.15x = 23,321,552.07
  5. Step 5: Solve for x
    x = 23,321,552.07/7,829.15
  6. Step 6: Final answer
    x = 2,978.81

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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.