Home / 1,661.07-2,291.85-1,101.63

Finding the Fourth Proportional to 1,661.07, 2,291.85 and 1,101.63

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Solution

The fourth proportional to 1,661.07, 2,291.85 and 1,101.63 is: 1,519.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.07 : 2,291.85 = 1,101.63 : x
  2. Step 2: Convert to fraction form
    1,661.07/2,291.85 = 1,101.63/x
  3. Step 3: Cross multiply
    1,661.07x = 2,291.85 × 1,101.63
  4. Step 4: Simplify right side
    1,661.07x = 2,524,770.72
  5. Step 5: Solve for x
    x = 2,524,770.72/1,661.07
  6. Step 6: Final answer
    x = 1,519.97

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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.