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Finding the Fourth Proportional to 8,547.75, 12,823.79 and 2,391.75

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Solution

The fourth proportional to 8,547.75, 12,823.79 and 2,391.75 is: 3,588.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.75 : 12,823.79 = 2,391.75 : x
  2. Step 2: Convert to fraction form
    8,547.75/12,823.79 = 2,391.75/x
  3. Step 3: Cross multiply
    8,547.75x = 12,823.79 × 2,391.75
  4. Step 4: Simplify right side
    8,547.75x = 30,671,287.77
  5. Step 5: Solve for x
    x = 30,671,287.77/8,547.75
  6. Step 6: Final answer
    x = 3,588.23

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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.