Home / 2,657.39-3,986.72-1,684.31

Finding the Fourth Proportional to 2,657.39, 3,986.72 and 1,684.31

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Solution

The fourth proportional to 2,657.39, 3,986.72 and 1,684.31 is: 2,526.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.39 : 3,986.72 = 1,684.31 : x
  2. Step 2: Convert to fraction form
    2,657.39/3,986.72 = 1,684.31/x
  3. Step 3: Cross multiply
    2,657.39x = 3,986.72 × 1,684.31
  4. Step 4: Simplify right side
    2,657.39x = 6,714,863.94
  5. Step 5: Solve for x
    x = 6,714,863.94/2,657.39
  6. Step 6: Final answer
    x = 2,526.86

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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.