Home / 2,681.52-4,021.74-949.80

Finding the Fourth Proportional to 2,681.52, 4,021.74 and 949.80

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Solution

The fourth proportional to 2,681.52, 4,021.74 and 949.80 is: 1,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.52 : 4,021.74 = 949.80 : x
  2. Step 2: Convert to fraction form
    2,681.52/4,021.74 = 949.80/x
  3. Step 3: Cross multiply
    2,681.52x = 4,021.74 × 949.80
  4. Step 4: Simplify right side
    2,681.52x = 3,819,848.65
  5. Step 5: Solve for x
    x = 3,819,848.65/2,681.52
  6. Step 6: Final answer
    x = 1,424.51

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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.