Home / 1,455.13-2,181.03-723.07

Finding the Fourth Proportional to 1,455.13, 2,181.03 and 723.07

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Solution

The fourth proportional to 1,455.13, 2,181.03 and 723.07 is: 1,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.13 : 2,181.03 = 723.07 : x
  2. Step 2: Convert to fraction form
    1,455.13/2,181.03 = 723.07/x
  3. Step 3: Cross multiply
    1,455.13x = 2,181.03 × 723.07
  4. Step 4: Simplify right side
    1,455.13x = 1,577,037.36
  5. Step 5: Solve for x
    x = 1,577,037.36/1,455.13
  6. Step 6: Final answer
    x = 1,083.78

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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.