Home / 7,851.36-11,779.92-3,231.84

Finding the Fourth Proportional to 7,851.36, 11,779.92 and 3,231.84

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Solution

The fourth proportional to 7,851.36, 11,779.92 and 3,231.84 is: 4,848.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.36 : 11,779.92 = 3,231.84 : x
  2. Step 2: Convert to fraction form
    7,851.36/11,779.92 = 3,231.84/x
  3. Step 3: Cross multiply
    7,851.36x = 11,779.92 × 3,231.84
  4. Step 4: Simplify right side
    7,851.36x = 38,070,816.65
  5. Step 5: Solve for x
    x = 38,070,816.65/7,851.36
  6. Step 6: Final answer
    x = 4,848.95

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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.