Home / 3,128.26-4,317.06-1,801.74

Finding the Fourth Proportional to 3,128.26, 4,317.06 and 1,801.74

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Solution

The fourth proportional to 3,128.26, 4,317.06 and 1,801.74 is: 2,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.26 : 4,317.06 = 1,801.74 : x
  2. Step 2: Convert to fraction form
    3,128.26/4,317.06 = 1,801.74/x
  3. Step 3: Cross multiply
    3,128.26x = 4,317.06 × 1,801.74
  4. Step 4: Simplify right side
    3,128.26x = 7,778,219.68
  5. Step 5: Solve for x
    x = 7,778,219.68/3,128.26
  6. Step 6: Final answer
    x = 2,486.44

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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.