Home / 3,106.31-4,287.51-2,162.25

Finding the Fourth Proportional to 3,106.31, 4,287.51 and 2,162.25

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Solution

The fourth proportional to 3,106.31, 4,287.51 and 2,162.25 is: 2,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.31 : 4,287.51 = 2,162.25 : x
  2. Step 2: Convert to fraction form
    3,106.31/4,287.51 = 2,162.25/x
  3. Step 3: Cross multiply
    3,106.31x = 4,287.51 × 2,162.25
  4. Step 4: Simplify right side
    3,106.31x = 9,270,673.81
  5. Step 5: Solve for x
    x = 9,270,673.81/3,106.31
  6. Step 6: Final answer
    x = 2,984.47

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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.