Home / 1,986.49-2,740.93-1,348.65

Finding the Fourth Proportional to 1,986.49, 2,740.93 and 1,348.65

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Solution

The fourth proportional to 1,986.49, 2,740.93 and 1,348.65 is: 1,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.49 : 2,740.93 = 1,348.65 : x
  2. Step 2: Convert to fraction form
    1,986.49/2,740.93 = 1,348.65/x
  3. Step 3: Cross multiply
    1,986.49x = 2,740.93 × 1,348.65
  4. Step 4: Simplify right side
    1,986.49x = 3,696,555.24
  5. Step 5: Solve for x
    x = 3,696,555.24/1,986.49
  6. Step 6: Final answer
    x = 1,860.85

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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.