Home / 2,618.34-3,613.44-1,439.40

Finding the Fourth Proportional to 2,618.34, 3,613.44 and 1,439.40

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Solution

The fourth proportional to 2,618.34, 3,613.44 and 1,439.40 is: 1,986.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.34 : 3,613.44 = 1,439.40 : x
  2. Step 2: Convert to fraction form
    2,618.34/3,613.44 = 1,439.40/x
  3. Step 3: Cross multiply
    2,618.34x = 3,613.44 × 1,439.40
  4. Step 4: Simplify right side
    2,618.34x = 5,201,185.54
  5. Step 5: Solve for x
    x = 5,201,185.54/2,618.34
  6. Step 6: Final answer
    x = 1,986.44

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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.