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Finding the Fourth Proportional to 8,547.12, 12,822.86 and 2,391.12

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Solution

The fourth proportional to 8,547.12, 12,822.86 and 2,391.12 is: 3,587.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.12 : 12,822.86 = 2,391.12 : x
  2. Step 2: Convert to fraction form
    8,547.12/12,822.86 = 2,391.12/x
  3. Step 3: Cross multiply
    8,547.12x = 12,822.86 × 2,391.12
  4. Step 4: Simplify right side
    8,547.12x = 30,660,997.00
  5. Step 5: Solve for x
    x = 30,660,997.00/8,547.12
  6. Step 6: Final answer
    x = 3,587.29

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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.