Home / 1,986.48-2,740.68-1,323.45

Finding the Fourth Proportional to 1,986.48, 2,740.68 and 1,323.45

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Solution

The fourth proportional to 1,986.48, 2,740.68 and 1,323.45 is: 1,825.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.48 : 2,740.68 = 1,323.45 : x
  2. Step 2: Convert to fraction form
    1,986.48/2,740.68 = 1,323.45/x
  3. Step 3: Cross multiply
    1,986.48x = 2,740.68 × 1,323.45
  4. Step 4: Simplify right side
    1,986.48x = 3,627,152.95
  5. Step 5: Solve for x
    x = 3,627,152.95/1,986.48
  6. Step 6: Final answer
    x = 1,825.92

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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.