Home / 1,348.25-2,020.55-860.22

Finding the Fourth Proportional to 1,348.25, 2,020.55 and 860.22

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Solution

The fourth proportional to 1,348.25, 2,020.55 and 860.22 is: 1,289.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.25 : 2,020.55 = 860.22 : x
  2. Step 2: Convert to fraction form
    1,348.25/2,020.55 = 860.22/x
  3. Step 3: Cross multiply
    1,348.25x = 2,020.55 × 860.22
  4. Step 4: Simplify right side
    1,348.25x = 1,738,113.22
  5. Step 5: Solve for x
    x = 1,738,113.22/1,348.25
  6. Step 6: Final answer
    x = 1,289.17

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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.