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Finding the Fourth Proportional to 8,234.70, 12,357.45 and 4,724.70

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Solution

The fourth proportional to 8,234.70, 12,357.45 and 4,724.70 is: 7,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,234.70 : 12,357.45 = 4,724.70 : x
  2. Step 2: Convert to fraction form
    8,234.70/12,357.45 = 4,724.70/x
  3. Step 3: Cross multiply
    8,234.70x = 12,357.45 × 4,724.70
  4. Step 4: Simplify right side
    8,234.70x = 58,385,244.02
  5. Step 5: Solve for x
    x = 58,385,244.02/8,234.70
  6. Step 6: Final answer
    x = 7,090.15

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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.