Home / 1,389.16-2,083.94-464.51

Finding the Fourth Proportional to 1,389.16, 2,083.94 and 464.51

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Solution

The fourth proportional to 1,389.16, 2,083.94 and 464.51 is: 696.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.16 : 2,083.94 = 464.51 : x
  2. Step 2: Convert to fraction form
    1,389.16/2,083.94 = 464.51/x
  3. Step 3: Cross multiply
    1,389.16x = 2,083.94 × 464.51
  4. Step 4: Simplify right side
    1,389.16x = 968,010.97
  5. Step 5: Solve for x
    x = 968,010.97/1,389.16
  6. Step 6: Final answer
    x = 696.83

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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.