Home / 2,690.70-3,713.25-1,628.66

Finding the Fourth Proportional to 2,690.70, 3,713.25 and 1,628.66

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Solution

The fourth proportional to 2,690.70, 3,713.25 and 1,628.66 is: 2,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.70 : 3,713.25 = 1,628.66 : x
  2. Step 2: Convert to fraction form
    2,690.70/3,713.25 = 1,628.66/x
  3. Step 3: Cross multiply
    2,690.70x = 3,713.25 × 1,628.66
  4. Step 4: Simplify right side
    2,690.70x = 6,047,627.33
  5. Step 5: Solve for x
    x = 6,047,627.33/2,690.70
  6. Step 6: Final answer
    x = 2,247.60

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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.