Home / 1,698.37-2,344.55-1,138.66

Finding the Fourth Proportional to 1,698.37, 2,344.55 and 1,138.66

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Solution

The fourth proportional to 1,698.37, 2,344.55 and 1,138.66 is: 1,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.37 : 2,344.55 = 1,138.66 : x
  2. Step 2: Convert to fraction form
    1,698.37/2,344.55 = 1,138.66/x
  3. Step 3: Cross multiply
    1,698.37x = 2,344.55 × 1,138.66
  4. Step 4: Simplify right side
    1,698.37x = 2,669,633.75
  5. Step 5: Solve for x
    x = 2,669,633.75/1,698.37
  6. Step 6: Final answer
    x = 1,571.88

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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.