Home / 2,768.06-4,150.64-918.74

Finding the Fourth Proportional to 2,768.06, 4,150.64 and 918.74

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Solution

The fourth proportional to 2,768.06, 4,150.64 and 918.74 is: 1,377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.06 : 4,150.64 = 918.74 : x
  2. Step 2: Convert to fraction form
    2,768.06/4,150.64 = 918.74/x
  3. Step 3: Cross multiply
    2,768.06x = 4,150.64 × 918.74
  4. Step 4: Simplify right side
    2,768.06x = 3,813,358.99
  5. Step 5: Solve for x
    x = 3,813,358.99/2,768.06
  6. Step 6: Final answer
    x = 1,377.63

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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.