Home / 1,455.32-2,179.68-723.26

Finding the Fourth Proportional to 1,455.32, 2,179.68 and 723.26

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Solution

The fourth proportional to 1,455.32, 2,179.68 and 723.26 is: 1,083.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.32 : 2,179.68 = 723.26 : x
  2. Step 2: Convert to fraction form
    1,455.32/2,179.68 = 723.26/x
  3. Step 3: Cross multiply
    1,455.32x = 2,179.68 × 723.26
  4. Step 4: Simplify right side
    1,455.32x = 1,576,475.36
  5. Step 5: Solve for x
    x = 1,576,475.36/1,455.32
  6. Step 6: Final answer
    x = 1,083.25

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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.