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Finding the Fourth Proportional to 8,653.32, 12,981.35 and 3,723

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Solution

The fourth proportional to 8,653.32, 12,981.35 and 3,723 is: 5,585.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.32 : 12,981.35 = 3,723 : x
  2. Step 2: Convert to fraction form
    8,653.32/12,981.35 = 3,723/x
  3. Step 3: Cross multiply
    8,653.32x = 12,981.35 × 3,723
  4. Step 4: Simplify right side
    8,653.32x = 48,329,566.05
  5. Step 5: Solve for x
    x = 48,329,566.05/8,653.32
  6. Step 6: Final answer
    x = 5,585.09

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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.