Home / 2,120.49-2,926.62-1,376.64

Finding the Fourth Proportional to 2,120.49, 2,926.62 and 1,376.64

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Solution

The fourth proportional to 2,120.49, 2,926.62 and 1,376.64 is: 1,899.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.49 : 2,926.62 = 1,376.64 : x
  2. Step 2: Convert to fraction form
    2,120.49/2,926.62 = 1,376.64/x
  3. Step 3: Cross multiply
    2,120.49x = 2,926.62 × 1,376.64
  4. Step 4: Simplify right side
    2,120.49x = 4,028,902.16
  5. Step 5: Solve for x
    x = 4,028,902.16/2,120.49
  6. Step 6: Final answer
    x = 1,899.99

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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.