Home / 1,728.23-2,385.41-982.62

Finding the Fourth Proportional to 1,728.23, 2,385.41 and 982.62

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Solution

The fourth proportional to 1,728.23, 2,385.41 and 982.62 is: 1,356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.23 : 2,385.41 = 982.62 : x
  2. Step 2: Convert to fraction form
    1,728.23/2,385.41 = 982.62/x
  3. Step 3: Cross multiply
    1,728.23x = 2,385.41 × 982.62
  4. Step 4: Simplify right side
    1,728.23x = 2,343,946.66
  5. Step 5: Solve for x
    x = 2,343,946.66/1,728.23
  6. Step 6: Final answer
    x = 1,356.27

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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.