Home / 3,107.04-4,284.60-1,986.72

Finding the Fourth Proportional to 3,107.04, 4,284.60 and 1,986.72

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Solution

The fourth proportional to 3,107.04, 4,284.60 and 1,986.72 is: 2,739.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.04 : 4,284.60 = 1,986.72 : x
  2. Step 2: Convert to fraction form
    3,107.04/4,284.60 = 1,986.72/x
  3. Step 3: Cross multiply
    3,107.04x = 4,284.60 × 1,986.72
  4. Step 4: Simplify right side
    3,107.04x = 8,512,300.51
  5. Step 5: Solve for x
    x = 8,512,300.51/3,107.04
  6. Step 6: Final answer
    x = 2,739.68

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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.