Home / 1,790.88-2,469.60-1,686.36

Finding the Fourth Proportional to 1,790.88, 2,469.60 and 1,686.36

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Solution

The fourth proportional to 1,790.88, 2,469.60 and 1,686.36 is: 2,325.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.88 : 2,469.60 = 1,686.36 : x
  2. Step 2: Convert to fraction form
    1,790.88/2,469.60 = 1,686.36/x
  3. Step 3: Cross multiply
    1,790.88x = 2,469.60 × 1,686.36
  4. Step 4: Simplify right side
    1,790.88x = 4,164,634.66
  5. Step 5: Solve for x
    x = 4,164,634.66/1,790.88
  6. Step 6: Final answer
    x = 2,325.47

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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.