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Finding the Fourth Proportional to 2,698.04, 3,723.06 and 1,990.27

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Solution

The fourth proportional to 2,698.04, 3,723.06 and 1,990.27 is: 2,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,698.04 : 3,723.06 = 1,990.27 : x
  2. Step 2: Convert to fraction form
    2,698.04/3,723.06 = 1,990.27/x
  3. Step 3: Cross multiply
    2,698.04x = 3,723.06 × 1,990.27
  4. Step 4: Simplify right side
    2,698.04x = 7,409,906.74
  5. Step 5: Solve for x
    x = 7,409,906.74/2,698.04
  6. Step 6: Final answer
    x = 2,746.40

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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.