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Finding the Fourth Proportional to 3,122.71, 4,683.84 and 1,889.79

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Solution

The fourth proportional to 3,122.71, 4,683.84 and 1,889.79 is: 2,834.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.71 : 4,683.84 = 1,889.79 : x
  2. Step 2: Convert to fraction form
    3,122.71/4,683.84 = 1,889.79/x
  3. Step 3: Cross multiply
    3,122.71x = 4,683.84 × 1,889.79
  4. Step 4: Simplify right side
    3,122.71x = 8,851,473.99
  5. Step 5: Solve for x
    x = 8,851,473.99/3,122.71
  6. Step 6: Final answer
    x = 2,834.55

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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.