Home / 1,926.70-2,890.05-1,805.20

Finding the Fourth Proportional to 1,926.70, 2,890.05 and 1,805.20

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Solution

The fourth proportional to 1,926.70, 2,890.05 and 1,805.20 is: 2,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.70 : 2,890.05 = 1,805.20 : x
  2. Step 2: Convert to fraction form
    1,926.70/2,890.05 = 1,805.20/x
  3. Step 3: Cross multiply
    1,926.70x = 2,890.05 × 1,805.20
  4. Step 4: Simplify right side
    1,926.70x = 5,217,118.26
  5. Step 5: Solve for x
    x = 5,217,118.26/1,926.70
  6. Step 6: Final answer
    x = 2,707.80

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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.