Home / 7,851.80-11,777.73-1,928.71

Finding the Fourth Proportional to 7,851.80, 11,777.73 and 1,928.71

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Solution

The fourth proportional to 7,851.80, 11,777.73 and 1,928.71 is: 2,893.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.80 : 11,777.73 = 1,928.71 : x
  2. Step 2: Convert to fraction form
    7,851.80/11,777.73 = 1,928.71/x
  3. Step 3: Cross multiply
    7,851.80x = 11,777.73 × 1,928.71
  4. Step 4: Simplify right side
    7,851.80x = 22,715,833.12
  5. Step 5: Solve for x
    x = 22,715,833.12/7,851.80
  6. Step 6: Final answer
    x = 2,893.07

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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.