Home / 1,539.56-2,121.72-1,511.48

Finding the Fourth Proportional to 1,539.56, 2,121.72 and 1,511.48

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Solution

The fourth proportional to 1,539.56, 2,121.72 and 1,511.48 is: 2,083.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.56 : 2,121.72 = 1,511.48 : x
  2. Step 2: Convert to fraction form
    1,539.56/2,121.72 = 1,511.48/x
  3. Step 3: Cross multiply
    1,539.56x = 2,121.72 × 1,511.48
  4. Step 4: Simplify right side
    1,539.56x = 3,206,937.35
  5. Step 5: Solve for x
    x = 3,206,937.35/1,539.56
  6. Step 6: Final answer
    x = 2,083.02

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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.