Home / 1,828.35-2,519.71-1,261.35

Finding the Fourth Proportional to 1,828.35, 2,519.71 and 1,261.35

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Solution

The fourth proportional to 1,828.35, 2,519.71 and 1,261.35 is: 1,738.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,828.35 : 2,519.71 = 1,261.35 : x
  2. Step 2: Convert to fraction form
    1,828.35/2,519.71 = 1,261.35/x
  3. Step 3: Cross multiply
    1,828.35x = 2,519.71 × 1,261.35
  4. Step 4: Simplify right side
    1,828.35x = 3,178,233.06
  5. Step 5: Solve for x
    x = 3,178,233.06/1,828.35
  6. Step 6: Final answer
    x = 1,738.31

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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.