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Finding the Fourth Proportional to 1,986.36, 2,981.15 and 832.92

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Solution

The fourth proportional to 1,986.36, 2,981.15 and 832.92 is: 1,250.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.36 : 2,981.15 = 832.92 : x
  2. Step 2: Convert to fraction form
    1,986.36/2,981.15 = 832.92/x
  3. Step 3: Cross multiply
    1,986.36x = 2,981.15 × 832.92
  4. Step 4: Simplify right side
    1,986.36x = 2,483,059.46
  5. Step 5: Solve for x
    x = 2,483,059.46/1,986.36
  6. Step 6: Final answer
    x = 1,250.06

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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.