Home / 8,113.02-12,169.80-2,919.30

Finding the Fourth Proportional to 8,113.02, 12,169.80 and 2,919.30

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Solution

The fourth proportional to 8,113.02, 12,169.80 and 2,919.30 is: 4,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.02 : 12,169.80 = 2,919.30 : x
  2. Step 2: Convert to fraction form
    8,113.02/12,169.80 = 2,919.30/x
  3. Step 3: Cross multiply
    8,113.02x = 12,169.80 × 2,919.30
  4. Step 4: Simplify right side
    8,113.02x = 35,527,297.14
  5. Step 5: Solve for x
    x = 35,527,297.14/8,113.02
  6. Step 6: Final answer
    x = 4,379.05

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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.