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Finding the Fourth Proportional to 1,889.54, 2,834.30 and 656.95

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Solution

The fourth proportional to 1,889.54, 2,834.30 and 656.95 is: 985.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.54 : 2,834.30 = 656.95 : x
  2. Step 2: Convert to fraction form
    1,889.54/2,834.30 = 656.95/x
  3. Step 3: Cross multiply
    1,889.54x = 2,834.30 × 656.95
  4. Step 4: Simplify right side
    1,889.54x = 1,861,975.93
  5. Step 5: Solve for x
    x = 1,861,975.93/1,889.54
  6. Step 6: Final answer
    x = 985.41

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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.