Home / 8,103.12-11,179.08-5,271.12

Finding the Fourth Proportional to 8,103.12, 11,179.08 and 5,271.12

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Solution

The fourth proportional to 8,103.12, 11,179.08 and 5,271.12 is: 7,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.12 : 11,179.08 = 5,271.12 : x
  2. Step 2: Convert to fraction form
    8,103.12/11,179.08 = 5,271.12/x
  3. Step 3: Cross multiply
    8,103.12x = 11,179.08 × 5,271.12
  4. Step 4: Simplify right side
    8,103.12x = 58,926,272.17
  5. Step 5: Solve for x
    x = 58,926,272.17/8,103.12
  6. Step 6: Final answer
    x = 7,272.05

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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.