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Finding the Fourth Proportional to 8,821.35, 12,173.51 and 4,842.51

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Solution

The fourth proportional to 8,821.35, 12,173.51 and 4,842.51 is: 6,682.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.35 : 12,173.51 = 4,842.51 : x
  2. Step 2: Convert to fraction form
    8,821.35/12,173.51 = 4,842.51/x
  3. Step 3: Cross multiply
    8,821.35x = 12,173.51 × 4,842.51
  4. Step 4: Simplify right side
    8,821.35x = 58,950,319.70
  5. Step 5: Solve for x
    x = 58,950,319.70/8,821.35
  6. Step 6: Final answer
    x = 6,682.69

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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.