Home / 1,439.10-2,157.26-464.49

Finding the Fourth Proportional to 1,439.10, 2,157.26 and 464.49

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Solution

The fourth proportional to 1,439.10, 2,157.26 and 464.49 is: 696.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.10 : 2,157.26 = 464.49 : x
  2. Step 2: Convert to fraction form
    1,439.10/2,157.26 = 464.49/x
  3. Step 3: Cross multiply
    1,439.10x = 2,157.26 × 464.49
  4. Step 4: Simplify right side
    1,439.10x = 1,002,023.37
  5. Step 5: Solve for x
    x = 1,002,023.37/1,439.10
  6. Step 6: Final answer
    x = 696.28

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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.