Home / 8,204.20-12,306.30-7,858.60

Finding the Fourth Proportional to 8,204.20, 12,306.30 and 7,858.60

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Solution

The fourth proportional to 8,204.20, 12,306.30 and 7,858.60 is: 11,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,204.20 : 12,306.30 = 7,858.60 : x
  2. Step 2: Convert to fraction form
    8,204.20/12,306.30 = 7,858.60/x
  3. Step 3: Cross multiply
    8,204.20x = 12,306.30 × 7,858.60
  4. Step 4: Simplify right side
    8,204.20x = 96,710,289.18
  5. Step 5: Solve for x
    x = 96,710,289.18/8,204.20
  6. Step 6: Final answer
    x = 11,787.90

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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.