Home / 2,986.95-4,122.93-1,792.81

Finding the Fourth Proportional to 2,986.95, 4,122.93 and 1,792.81

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Solution

The fourth proportional to 2,986.95, 4,122.93 and 1,792.81 is: 2,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.95 : 4,122.93 = 1,792.81 : x
  2. Step 2: Convert to fraction form
    2,986.95/4,122.93 = 1,792.81/x
  3. Step 3: Cross multiply
    2,986.95x = 4,122.93 × 1,792.81
  4. Step 4: Simplify right side
    2,986.95x = 7,391,630.13
  5. Step 5: Solve for x
    x = 7,391,630.13/2,986.95
  6. Step 6: Final answer
    x = 2,474.64

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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.