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Finding the Fourth Proportional to 8,725.88, 12,040.62 and 5,899.40

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Solution

The fourth proportional to 8,725.88, 12,040.62 and 5,899.40 is: 8,140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.88 : 12,040.62 = 5,899.40 : x
  2. Step 2: Convert to fraction form
    8,725.88/12,040.62 = 5,899.40/x
  3. Step 3: Cross multiply
    8,725.88x = 12,040.62 × 5,899.40
  4. Step 4: Simplify right side
    8,725.88x = 71,032,433.63
  5. Step 5: Solve for x
    x = 71,032,433.63/8,725.88
  6. Step 6: Final answer
    x = 8,140.43

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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.