Home / 7,804.12-11,704.92-2,871.20

Finding the Fourth Proportional to 7,804.12, 11,704.92 and 2,871.20

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Solution

The fourth proportional to 7,804.12, 11,704.92 and 2,871.20 is: 4,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,804.12 : 11,704.92 = 2,871.20 : x
  2. Step 2: Convert to fraction form
    7,804.12/11,704.92 = 2,871.20/x
  3. Step 3: Cross multiply
    7,804.12x = 11,704.92 × 2,871.20
  4. Step 4: Simplify right side
    7,804.12x = 33,607,166.30
  5. Step 5: Solve for x
    x = 33,607,166.30/7,804.12
  6. Step 6: Final answer
    x = 4,306.34

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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.