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Finding the Fourth Proportional to 2,834.15, 4,251.29 and 985.32

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Solution

The fourth proportional to 2,834.15, 4,251.29 and 985.32 is: 1,478.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,834.15 : 4,251.29 = 985.32 : x
  2. Step 2: Convert to fraction form
    2,834.15/4,251.29 = 985.32/x
  3. Step 3: Cross multiply
    2,834.15x = 4,251.29 × 985.32
  4. Step 4: Simplify right side
    2,834.15x = 4,188,881.06
  5. Step 5: Solve for x
    x = 4,188,881.06/2,834.15
  6. Step 6: Final answer
    x = 1,478.00

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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.