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Finding the Fourth Proportional to 2,686.06, 4,028.62 and 737.80

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Solution

The fourth proportional to 2,686.06, 4,028.62 and 737.80 is: 1,106.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.06 : 4,028.62 = 737.80 : x
  2. Step 2: Convert to fraction form
    2,686.06/4,028.62 = 737.80/x
  3. Step 3: Cross multiply
    2,686.06x = 4,028.62 × 737.80
  4. Step 4: Simplify right side
    2,686.06x = 2,972,315.84
  5. Step 5: Solve for x
    x = 2,972,315.84/2,686.06
  6. Step 6: Final answer
    x = 1,106.57

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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.