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Finding the Fourth Proportional to 2,999.75, 4,140.19 and 1,881.65

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Solution

The fourth proportional to 2,999.75, 4,140.19 and 1,881.65 is: 2,597.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.75 : 4,140.19 = 1,881.65 : x
  2. Step 2: Convert to fraction form
    2,999.75/4,140.19 = 1,881.65/x
  3. Step 3: Cross multiply
    2,999.75x = 4,140.19 × 1,881.65
  4. Step 4: Simplify right side
    2,999.75x = 7,790,388.51
  5. Step 5: Solve for x
    x = 7,790,388.51/2,999.75
  6. Step 6: Final answer
    x = 2,597.01

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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.