Home / 8,165.12-11,271.30-5,516.12

Finding the Fourth Proportional to 8,165.12, 11,271.30 and 5,516.12

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Solution

The fourth proportional to 8,165.12, 11,271.30 and 5,516.12 is: 7,614.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.12 : 11,271.30 = 5,516.12 : x
  2. Step 2: Convert to fraction form
    8,165.12/11,271.30 = 5,516.12/x
  3. Step 3: Cross multiply
    8,165.12x = 11,271.30 × 5,516.12
  4. Step 4: Simplify right side
    8,165.12x = 62,173,843.36
  5. Step 5: Solve for x
    x = 62,173,843.36/8,165.12
  6. Step 6: Final answer
    x = 7,614.57

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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.