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Finding the Fourth Proportional to 8,363.16, 12,547.98 and 3,172.68

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Solution

The fourth proportional to 8,363.16, 12,547.98 and 3,172.68 is: 4,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,363.16 : 12,547.98 = 3,172.68 : x
  2. Step 2: Convert to fraction form
    8,363.16/12,547.98 = 3,172.68/x
  3. Step 3: Cross multiply
    8,363.16x = 12,547.98 × 3,172.68
  4. Step 4: Simplify right side
    8,363.16x = 39,810,725.19
  5. Step 5: Solve for x
    x = 39,810,725.19/8,363.16
  6. Step 6: Final answer
    x = 4,760.25

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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.