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Finding the Fourth Proportional to 2,834.54, 4,253.75 and 985.66

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Solution

The fourth proportional to 2,834.54, 4,253.75 and 985.66 is: 1,479.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,834.54 : 4,253.75 = 985.66 : x
  2. Step 2: Convert to fraction form
    2,834.54/4,253.75 = 985.66/x
  3. Step 3: Cross multiply
    2,834.54x = 4,253.75 × 985.66
  4. Step 4: Simplify right side
    2,834.54x = 4,192,731.19
  5. Step 5: Solve for x
    x = 4,192,731.19/2,834.54
  6. Step 6: Final answer
    x = 1,479.16

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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.