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Finding the Fourth Proportional to 9,855.74, 14,780.43 and 3,280.18

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Solution

The fourth proportional to 9,855.74, 14,780.43 and 3,280.18 is: 4,919.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.74 : 14,780.43 = 3,280.18 : x
  2. Step 2: Convert to fraction form
    9,855.74/14,780.43 = 3,280.18/x
  3. Step 3: Cross multiply
    9,855.74x = 14,780.43 × 3,280.18
  4. Step 4: Simplify right side
    9,855.74x = 48,482,470.88
  5. Step 5: Solve for x
    x = 48,482,470.88/9,855.74
  6. Step 6: Final answer
    x = 4,919.21

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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.