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Finding the Fourth Proportional to 8,235.69, 12,354.75 and 2,391.54

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Solution

The fourth proportional to 8,235.69, 12,354.75 and 2,391.54 is: 3,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.69 : 12,354.75 = 2,391.54 : x
  2. Step 2: Convert to fraction form
    8,235.69/12,354.75 = 2,391.54/x
  3. Step 3: Cross multiply
    8,235.69x = 12,354.75 × 2,391.54
  4. Step 4: Simplify right side
    8,235.69x = 29,546,878.82
  5. Step 5: Solve for x
    x = 29,546,878.82/8,235.69
  6. Step 6: Final answer
    x = 3,587.66

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1.5x scale

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.