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Finding the Fourth Proportional to 8,235.61, 12,354.62 and 2,391.46

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Solution

The fourth proportional to 8,235.61, 12,354.62 and 2,391.46 is: 3,587.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.61 : 12,354.62 = 2,391.46 : x
  2. Step 2: Convert to fraction form
    8,235.61/12,354.62 = 2,391.46/x
  3. Step 3: Cross multiply
    8,235.61x = 12,354.62 × 2,391.46
  4. Step 4: Simplify right side
    8,235.61x = 29,545,536.70
  5. Step 5: Solve for x
    x = 29,545,536.70/8,235.61
  6. Step 6: Final answer
    x = 3,587.54

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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.