Home / 1,728.14-2,384.89-982.07

Finding the Fourth Proportional to 1,728.14, 2,384.89 and 982.07

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Solution

The fourth proportional to 1,728.14, 2,384.89 and 982.07 is: 1,355.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.14 : 2,384.89 = 982.07 : x
  2. Step 2: Convert to fraction form
    1,728.14/2,384.89 = 982.07/x
  3. Step 3: Cross multiply
    1,728.14x = 2,384.89 × 982.07
  4. Step 4: Simplify right side
    1,728.14x = 2,342,128.92
  5. Step 5: Solve for x
    x = 2,342,128.92/1,728.14
  6. Step 6: Final answer
    x = 1,355.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.