Home / 2,078.36-3,117.56-1,427.12

Finding the Fourth Proportional to 2,078.36, 3,117.56 and 1,427.12

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Solution

The fourth proportional to 2,078.36, 3,117.56 and 1,427.12 is: 2,140.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.36 : 3,117.56 = 1,427.12 : x
  2. Step 2: Convert to fraction form
    2,078.36/3,117.56 = 1,427.12/x
  3. Step 3: Cross multiply
    2,078.36x = 3,117.56 × 1,427.12
  4. Step 4: Simplify right side
    2,078.36x = 4,449,132.23
  5. Step 5: Solve for x
    x = 4,449,132.23/2,078.36
  6. Step 6: Final answer
    x = 2,140.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.