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Finding the Fourth Proportional to 8,757.29, 13,058.82 and 8,678.32

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Solution

The fourth proportional to 8,757.29, 13,058.82 and 8,678.32 is: 12,941.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.29 : 13,058.82 = 8,678.32 : x
  2. Step 2: Convert to fraction form
    8,757.29/13,058.82 = 8,678.32/x
  3. Step 3: Cross multiply
    8,757.29x = 13,058.82 × 8,678.32
  4. Step 4: Simplify right side
    8,757.29x = 113,328,586.14
  5. Step 5: Solve for x
    x = 113,328,586.14/8,757.29
  6. Step 6: Final answer
    x = 12,941.05

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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.