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Finding the Fourth Proportional to 9,855.86, 14,787.87 and 5,914.70

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Solution

The fourth proportional to 9,855.86, 14,787.87 and 5,914.70 is: 8,874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.86 : 14,787.87 = 5,914.70 : x
  2. Step 2: Convert to fraction form
    9,855.86/14,787.87 = 5,914.70/x
  3. Step 3: Cross multiply
    9,855.86x = 14,787.87 × 5,914.70
  4. Step 4: Simplify right side
    9,855.86x = 87,465,740.75
  5. Step 5: Solve for x
    x = 87,465,740.75/9,855.86
  6. Step 6: Final answer
    x = 8,874.50

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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.