Home / 2,986.78-4,480.95-2,799.19

Finding the Fourth Proportional to 2,986.78, 4,480.95 and 2,799.19

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Solution

The fourth proportional to 2,986.78, 4,480.95 and 2,799.19 is: 4,199.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.78 : 4,480.95 = 2,799.19 : x
  2. Step 2: Convert to fraction form
    2,986.78/4,480.95 = 2,799.19/x
  3. Step 3: Cross multiply
    2,986.78x = 4,480.95 × 2,799.19
  4. Step 4: Simplify right side
    2,986.78x = 12,543,030.43
  5. Step 5: Solve for x
    x = 12,543,030.43/2,986.78
  6. Step 6: Final answer
    x = 4,199.52

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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.