Home / 1,889.28-2,603.52-1,539.36

Finding the Fourth Proportional to 1,889.28, 2,603.52 and 1,539.36

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Solution

The fourth proportional to 1,889.28, 2,603.52 and 1,539.36 is: 2,121.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.28 : 2,603.52 = 1,539.36 : x
  2. Step 2: Convert to fraction form
    1,889.28/2,603.52 = 1,539.36/x
  3. Step 3: Cross multiply
    1,889.28x = 2,603.52 × 1,539.36
  4. Step 4: Simplify right side
    1,889.28x = 4,007,754.55
  5. Step 5: Solve for x
    x = 4,007,754.55/1,889.28
  6. Step 6: Final answer
    x = 2,121.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.