Home / 1,362.88-2,039.44-1,071.28

Finding the Fourth Proportional to 1,362.88, 2,039.44 and 1,071.28

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Solution

The fourth proportional to 1,362.88, 2,039.44 and 1,071.28 is: 1,603.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.88 : 2,039.44 = 1,071.28 : x
  2. Step 2: Convert to fraction form
    1,362.88/2,039.44 = 1,071.28/x
  3. Step 3: Cross multiply
    1,362.88x = 2,039.44 × 1,071.28
  4. Step 4: Simplify right side
    1,362.88x = 2,184,811.28
  5. Step 5: Solve for x
    x = 2,184,811.28/1,362.88
  6. Step 6: Final answer
    x = 1,603.08

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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.