Home / 3,313-4,571.77-1,986.45

Finding the Fourth Proportional to 3,313, 4,571.77 and 1,986.45

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Solution

The fourth proportional to 3,313, 4,571.77 and 1,986.45 is: 2,741.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313 : 4,571.77 = 1,986.45 : x
  2. Step 2: Convert to fraction form
    3,313/4,571.77 = 1,986.45/x
  3. Step 3: Cross multiply
    3,313x = 4,571.77 × 1,986.45
  4. Step 4: Simplify right side
    3,313x = 9,081,592.52
  5. Step 5: Solve for x
    x = 9,081,592.52/3,313
  6. Step 6: Final answer
    x = 2,741.20

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1.5x scale

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.