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Finding the Fourth Proportional to 8,648.71, 12,973.07 and 2,805.77

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Solution

The fourth proportional to 8,648.71, 12,973.07 and 2,805.77 is: 4,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.71 : 12,973.07 = 2,805.77 : x
  2. Step 2: Convert to fraction form
    8,648.71/12,973.07 = 2,805.77/x
  3. Step 3: Cross multiply
    8,648.71x = 12,973.07 × 2,805.77
  4. Step 4: Simplify right side
    8,648.71x = 36,399,490.06
  5. Step 5: Solve for x
    x = 36,399,490.06/8,648.71
  6. Step 6: Final answer
    x = 4,208.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.