Home / 7,860.69-11,790.81-1,937.61

Finding the Fourth Proportional to 7,860.69, 11,790.81 and 1,937.61

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Solution

The fourth proportional to 7,860.69, 11,790.81 and 1,937.61 is: 2,906.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.69 : 11,790.81 = 1,937.61 : x
  2. Step 2: Convert to fraction form
    7,860.69/11,790.81 = 1,937.61/x
  3. Step 3: Cross multiply
    7,860.69x = 11,790.81 × 1,937.61
  4. Step 4: Simplify right side
    7,860.69x = 22,845,991.36
  5. Step 5: Solve for x
    x = 22,845,991.36/7,860.69
  6. Step 6: Final answer
    x = 2,906.36

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1.5x scale

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.