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Finding the Fourth Proportional to 4,680.95, 7,019.46 and 1,905.74

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Solution

The fourth proportional to 4,680.95, 7,019.46 and 1,905.74 is: 2,857.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,680.95 : 7,019.46 = 1,905.74 : x
  2. Step 2: Convert to fraction form
    4,680.95/7,019.46 = 1,905.74/x
  3. Step 3: Cross multiply
    4,680.95x = 7,019.46 × 1,905.74
  4. Step 4: Simplify right side
    4,680.95x = 13,377,230.60
  5. Step 5: Solve for x
    x = 13,377,230.60/4,680.95
  6. Step 6: Final answer
    x = 2,857.81

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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.