Home / 2,881.40-3,975.14-1,936.76

Finding the Fourth Proportional to 2,881.40, 3,975.14 and 1,936.76

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Solution

The fourth proportional to 2,881.40, 3,975.14 and 1,936.76 is: 2,671.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.40 : 3,975.14 = 1,936.76 : x
  2. Step 2: Convert to fraction form
    2,881.40/3,975.14 = 1,936.76/x
  3. Step 3: Cross multiply
    2,881.40x = 3,975.14 × 1,936.76
  4. Step 4: Simplify right side
    2,881.40x = 7,698,892.15
  5. Step 5: Solve for x
    x = 7,698,892.15/2,881.40
  6. Step 6: Final answer
    x = 2,671.93

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Double scale
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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.