Home / 1,389.32-2,083.97-464.87

Finding the Fourth Proportional to 1,389.32, 2,083.97 and 464.87

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Solution

The fourth proportional to 1,389.32, 2,083.97 and 464.87 is: 697.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.32 : 2,083.97 = 464.87 : x
  2. Step 2: Convert to fraction form
    1,389.32/2,083.97 = 464.87/x
  3. Step 3: Cross multiply
    1,389.32x = 2,083.97 × 464.87
  4. Step 4: Simplify right side
    1,389.32x = 968,778.02
  5. Step 5: Solve for x
    x = 968,778.02/1,389.32
  6. Step 6: Final answer
    x = 697.31

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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.