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Finding the Fourth Proportional to 9,221.51, 12,725.43 and 5,029.76

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Solution

The fourth proportional to 9,221.51, 12,725.43 and 5,029.76 is: 6,940.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,221.51 : 12,725.43 = 5,029.76 : x
  2. Step 2: Convert to fraction form
    9,221.51/12,725.43 = 5,029.76/x
  3. Step 3: Cross multiply
    9,221.51x = 12,725.43 × 5,029.76
  4. Step 4: Simplify right side
    9,221.51x = 64,005,858.80
  5. Step 5: Solve for x
    x = 64,005,858.80/9,221.51
  6. Step 6: Final answer
    x = 6,940.93

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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.