Home / 1,890.23-2,608.79-1,575.05

Finding the Fourth Proportional to 1,890.23, 2,608.79 and 1,575.05

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Solution

The fourth proportional to 1,890.23, 2,608.79 and 1,575.05 is: 2,173.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.23 : 2,608.79 = 1,575.05 : x
  2. Step 2: Convert to fraction form
    1,890.23/2,608.79 = 1,575.05/x
  3. Step 3: Cross multiply
    1,890.23x = 2,608.79 × 1,575.05
  4. Step 4: Simplify right side
    1,890.23x = 4,108,953.77
  5. Step 5: Solve for x
    x = 4,108,953.77/1,890.23
  6. Step 6: Final answer
    x = 2,173.79

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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.