Home / 3,558.63-4,911-1,986.84

Finding the Fourth Proportional to 3,558.63, 4,911 and 1,986.84

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Solution

The fourth proportional to 3,558.63, 4,911 and 1,986.84 is: 2,741.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.63 : 4,911 = 1,986.84 : x
  2. Step 2: Convert to fraction form
    3,558.63/4,911 = 1,986.84/x
  3. Step 3: Cross multiply
    3,558.63x = 4,911 × 1,986.84
  4. Step 4: Simplify right side
    3,558.63x = 9,757,371.24
  5. Step 5: Solve for x
    x = 9,757,371.24/3,558.63
  6. Step 6: Final answer
    x = 2,741.89

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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.