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Finding the Fourth Proportional to 8,958.98, 12,363.63 and 5,181.77

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Solution

The fourth proportional to 8,958.98, 12,363.63 and 5,181.77 is: 7,150.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.98 : 12,363.63 = 5,181.77 : x
  2. Step 2: Convert to fraction form
    8,958.98/12,363.63 = 5,181.77/x
  3. Step 3: Cross multiply
    8,958.98x = 12,363.63 × 5,181.77
  4. Step 4: Simplify right side
    8,958.98x = 64,065,425.21
  5. Step 5: Solve for x
    x = 64,065,425.21/8,958.98
  6. Step 6: Final answer
    x = 7,150.98

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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.