Home / 1,686.44-2,325.36-1,370.84

Finding the Fourth Proportional to 1,686.44, 2,325.36 and 1,370.84

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Solution

The fourth proportional to 1,686.44, 2,325.36 and 1,370.84 is: 1,890.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.44 : 2,325.36 = 1,370.84 : x
  2. Step 2: Convert to fraction form
    1,686.44/2,325.36 = 1,370.84/x
  3. Step 3: Cross multiply
    1,686.44x = 2,325.36 × 1,370.84
  4. Step 4: Simplify right side
    1,686.44x = 3,187,696.50
  5. Step 5: Solve for x
    x = 3,187,696.50/1,686.44
  6. Step 6: Final answer
    x = 1,890.19

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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.