Home / 7,820.16-11,731.59-2,556.42

Finding the Fourth Proportional to 7,820.16, 11,731.59 and 2,556.42

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Solution

The fourth proportional to 7,820.16, 11,731.59 and 2,556.42 is: 3,835.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.16 : 11,731.59 = 2,556.42 : x
  2. Step 2: Convert to fraction form
    7,820.16/11,731.59 = 2,556.42/x
  3. Step 3: Cross multiply
    7,820.16x = 11,731.59 × 2,556.42
  4. Step 4: Simplify right side
    7,820.16x = 29,990,871.31
  5. Step 5: Solve for x
    x = 29,990,871.31/7,820.16
  6. Step 6: Final answer
    x = 3,835.07

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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.