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Finding the Fourth Proportional to 8,641.11, 12,970.53 and 5,361.96

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Solution

The fourth proportional to 8,641.11, 12,970.53 and 5,361.96 is: 8,048.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.11 : 12,970.53 = 5,361.96 : x
  2. Step 2: Convert to fraction form
    8,641.11/12,970.53 = 5,361.96/x
  3. Step 3: Cross multiply
    8,641.11x = 12,970.53 × 5,361.96
  4. Step 4: Simplify right side
    8,641.11x = 69,547,511.68
  5. Step 5: Solve for x
    x = 69,547,511.68/8,641.11
  6. Step 6: Final answer
    x = 8,048.44

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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.