Home / 2,623.66-3,620.73-1,428.73

Finding the Fourth Proportional to 2,623.66, 3,620.73 and 1,428.73

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Solution

The fourth proportional to 2,623.66, 3,620.73 and 1,428.73 is: 1,971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,623.66 : 3,620.73 = 1,428.73 : x
  2. Step 2: Convert to fraction form
    2,623.66/3,620.73 = 1,428.73/x
  3. Step 3: Cross multiply
    2,623.66x = 3,620.73 × 1,428.73
  4. Step 4: Simplify right side
    2,623.66x = 5,173,045.57
  5. Step 5: Solve for x
    x = 5,173,045.57/2,623.66
  6. Step 6: Final answer
    x = 1,971.69

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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.