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Finding the Fourth Proportional to 8,521.94, 12,788.76 and 2,975.29

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Solution

The fourth proportional to 8,521.94, 12,788.76 and 2,975.29 is: 4,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.94 : 12,788.76 = 2,975.29 : x
  2. Step 2: Convert to fraction form
    8,521.94/12,788.76 = 2,975.29/x
  3. Step 3: Cross multiply
    8,521.94x = 12,788.76 × 2,975.29
  4. Step 4: Simplify right side
    8,521.94x = 38,050,226.61
  5. Step 5: Solve for x
    x = 38,050,226.61/8,521.94
  6. Step 6: Final answer
    x = 4,464.97

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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.