Home / 8,199.04-11,315.68-5,178.55

Finding the Fourth Proportional to 8,199.04, 11,315.68 and 5,178.55

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Solution

The fourth proportional to 8,199.04, 11,315.68 and 5,178.55 is: 7,147.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,199.04 : 11,315.68 = 5,178.55 : x
  2. Step 2: Convert to fraction form
    8,199.04/11,315.68 = 5,178.55/x
  3. Step 3: Cross multiply
    8,199.04x = 11,315.68 × 5,178.55
  4. Step 4: Simplify right side
    8,199.04x = 58,598,814.66
  5. Step 5: Solve for x
    x = 58,598,814.66/8,199.04
  6. Step 6: Final answer
    x = 7,147.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.