Home / 8,221.12-11,342.46-5,031.09

Finding the Fourth Proportional to 8,221.12, 11,342.46 and 5,031.09

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Solution

The fourth proportional to 8,221.12, 11,342.46 and 5,031.09 is: 6,941.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.12 : 11,342.46 = 5,031.09 : x
  2. Step 2: Convert to fraction form
    8,221.12/11,342.46 = 5,031.09/x
  3. Step 3: Cross multiply
    8,221.12x = 11,342.46 × 5,031.09
  4. Step 4: Simplify right side
    8,221.12x = 57,064,985.21
  5. Step 5: Solve for x
    x = 57,064,985.21/8,221.12
  6. Step 6: Final answer
    x = 6,941.26

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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.