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Finding the Fourth Proportional to 3,912.80, 5,869.98 and 1,835.12

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Solution

The fourth proportional to 3,912.80, 5,869.98 and 1,835.12 is: 2,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.80 : 5,869.98 = 1,835.12 : x
  2. Step 2: Convert to fraction form
    3,912.80/5,869.98 = 1,835.12/x
  3. Step 3: Cross multiply
    3,912.80x = 5,869.98 × 1,835.12
  4. Step 4: Simplify right side
    3,912.80x = 10,772,117.70
  5. Step 5: Solve for x
    x = 10,772,117.70/3,912.80
  6. Step 6: Final answer
    x = 2,753.05

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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.