Home / 8,216.10-11,309.64-7,166.34

Finding the Fourth Proportional to 8,216.10, 11,309.64 and 7,166.34

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Solution

The fourth proportional to 8,216.10, 11,309.64 and 7,166.34 is: 9,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,216.10 : 11,309.64 = 7,166.34 : x
  2. Step 2: Convert to fraction form
    8,216.10/11,309.64 = 7,166.34/x
  3. Step 3: Cross multiply
    8,216.10x = 11,309.64 × 7,166.34
  4. Step 4: Simplify right side
    8,216.10x = 81,048,725.52
  5. Step 5: Solve for x
    x = 81,048,725.52/8,216.10
  6. Step 6: Final answer
    x = 9,864.62

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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.