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Finding the Fourth Proportional to 8,757.36, 13,058.90 and 8,678.38

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Solution

The fourth proportional to 8,757.36, 13,058.90 and 8,678.38 is: 12,941.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.36 : 13,058.90 = 8,678.38 : x
  2. Step 2: Convert to fraction form
    8,757.36/13,058.90 = 8,678.38/x
  3. Step 3: Cross multiply
    8,757.36x = 13,058.90 × 8,678.38
  4. Step 4: Simplify right side
    8,757.36x = 113,330,096.58
  5. Step 5: Solve for x
    x = 113,330,096.58/8,757.36
  6. Step 6: Final answer
    x = 12,941.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.