Home / 1,370.80-2,060.75-1,269.34

Finding the Fourth Proportional to 1,370.80, 2,060.75 and 1,269.34

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Solution

The fourth proportional to 1,370.80, 2,060.75 and 1,269.34 is: 1,908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.80 : 2,060.75 = 1,269.34 : x
  2. Step 2: Convert to fraction form
    1,370.80/2,060.75 = 1,269.34/x
  3. Step 3: Cross multiply
    1,370.80x = 2,060.75 × 1,269.34
  4. Step 4: Simplify right side
    1,370.80x = 2,615,792.41
  5. Step 5: Solve for x
    x = 2,615,792.41/1,370.80
  6. Step 6: Final answer
    x = 1,908.22

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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.