Home / 2,653.88-3,979.47-1,962.14

Finding the Fourth Proportional to 2,653.88, 3,979.47 and 1,962.14

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Solution

The fourth proportional to 2,653.88, 3,979.47 and 1,962.14 is: 2,942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.88 : 3,979.47 = 1,962.14 : x
  2. Step 2: Convert to fraction form
    2,653.88/3,979.47 = 1,962.14/x
  3. Step 3: Cross multiply
    2,653.88x = 3,979.47 × 1,962.14
  4. Step 4: Simplify right side
    2,653.88x = 7,808,277.27
  5. Step 5: Solve for x
    x = 7,808,277.27/2,653.88
  6. Step 6: Final answer
    x = 2,942.21

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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.