Home / 7,790.48-11,678.77-2,858.97

Finding the Fourth Proportional to 7,790.48, 11,678.77 and 2,858.97

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Solution

The fourth proportional to 7,790.48, 11,678.77 and 2,858.97 is: 4,285.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.48 : 11,678.77 = 2,858.97 : x
  2. Step 2: Convert to fraction form
    7,790.48/11,678.77 = 2,858.97/x
  3. Step 3: Cross multiply
    7,790.48x = 11,678.77 × 2,858.97
  4. Step 4: Simplify right side
    7,790.48x = 33,389,238.77
  5. Step 5: Solve for x
    x = 33,389,238.77/7,790.48
  6. Step 6: Final answer
    x = 4,285.91

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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.