Home / 3,613.95-4,986.88-2,101.09

Finding the Fourth Proportional to 3,613.95, 4,986.88 and 2,101.09

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Solution

The fourth proportional to 3,613.95, 4,986.88 and 2,101.09 is: 2,899.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.95 : 4,986.88 = 2,101.09 : x
  2. Step 2: Convert to fraction form
    3,613.95/4,986.88 = 2,101.09/x
  3. Step 3: Cross multiply
    3,613.95x = 4,986.88 × 2,101.09
  4. Step 4: Simplify right side
    3,613.95x = 10,477,883.70
  5. Step 5: Solve for x
    x = 10,477,883.70/3,613.95
  6. Step 6: Final answer
    x = 2,899.29

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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.