Home / 1,768.45-2,440.61-982.75

Finding the Fourth Proportional to 1,768.45, 2,440.61 and 982.75

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Solution

The fourth proportional to 1,768.45, 2,440.61 and 982.75 is: 1,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.45 : 2,440.61 = 982.75 : x
  2. Step 2: Convert to fraction form
    1,768.45/2,440.61 = 982.75/x
  3. Step 3: Cross multiply
    1,768.45x = 2,440.61 × 982.75
  4. Step 4: Simplify right side
    1,768.45x = 2,398,509.48
  5. Step 5: Solve for x
    x = 2,398,509.48/1,768.45
  6. Step 6: Final answer
    x = 1,356.28

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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.