Home / 2,618.19-3,613.82-1,688.31

Finding the Fourth Proportional to 2,618.19, 3,613.82 and 1,688.31

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Solution

The fourth proportional to 2,618.19, 3,613.82 and 1,688.31 is: 2,330.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.19 : 3,613.82 = 1,688.31 : x
  2. Step 2: Convert to fraction form
    2,618.19/3,613.82 = 1,688.31/x
  3. Step 3: Cross multiply
    2,618.19x = 3,613.82 × 1,688.31
  4. Step 4: Simplify right side
    2,618.19x = 6,101,240.00
  5. Step 5: Solve for x
    x = 6,101,240.00/2,618.19
  6. Step 6: Final answer
    x = 2,330.33

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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.