Home / 1,660.56-2,288.25-1,187.62

Finding the Fourth Proportional to 1,660.56, 2,288.25 and 1,187.62

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Solution

The fourth proportional to 1,660.56, 2,288.25 and 1,187.62 is: 1,636.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.56 : 2,288.25 = 1,187.62 : x
  2. Step 2: Convert to fraction form
    1,660.56/2,288.25 = 1,187.62/x
  3. Step 3: Cross multiply
    1,660.56x = 2,288.25 × 1,187.62
  4. Step 4: Simplify right side
    1,660.56x = 2,717,571.47
  5. Step 5: Solve for x
    x = 2,717,571.47/1,660.56
  6. Step 6: Final answer
    x = 1,636.54

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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.