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Finding the Fourth Proportional to 2,076.76, 3,115.13 and 1,972.94

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Solution

The fourth proportional to 2,076.76, 3,115.13 and 1,972.94 is: 2,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.76 : 3,115.13 = 1,972.94 : x
  2. Step 2: Convert to fraction form
    2,076.76/3,115.13 = 1,972.94/x
  3. Step 3: Cross multiply
    2,076.76x = 3,115.13 × 1,972.94
  4. Step 4: Simplify right side
    2,076.76x = 6,145,964.58
  5. Step 5: Solve for x
    x = 6,145,964.58/2,076.76
  6. Step 6: Final answer
    x = 2,959.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.