Home / 2,688.39-3,704.74-1,901.07

Finding the Fourth Proportional to 2,688.39, 3,704.74 and 1,901.07

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Solution

The fourth proportional to 2,688.39, 3,704.74 and 1,901.07 is: 2,619.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.39 : 3,704.74 = 1,901.07 : x
  2. Step 2: Convert to fraction form
    2,688.39/3,704.74 = 1,901.07/x
  3. Step 3: Cross multiply
    2,688.39x = 3,704.74 × 1,901.07
  4. Step 4: Simplify right side
    2,688.39x = 7,042,965.32
  5. Step 5: Solve for x
    x = 7,042,965.32/2,688.39
  6. Step 6: Final answer
    x = 2,619.77

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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.