Home / 1,986.27-2,740.95-1,146.39

Finding the Fourth Proportional to 1,986.27, 2,740.95 and 1,146.39

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Solution

The fourth proportional to 1,986.27, 2,740.95 and 1,146.39 is: 1,581.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.27 : 2,740.95 = 1,146.39 : x
  2. Step 2: Convert to fraction form
    1,986.27/2,740.95 = 1,146.39/x
  3. Step 3: Cross multiply
    1,986.27x = 2,740.95 × 1,146.39
  4. Step 4: Simplify right side
    1,986.27x = 3,142,197.67
  5. Step 5: Solve for x
    x = 3,142,197.67/1,986.27
  6. Step 6: Final answer
    x = 1,581.96

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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.