Home / 2,972.76-4,104.18-1,926.78

Finding the Fourth Proportional to 2,972.76, 4,104.18 and 1,926.78

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Solution

The fourth proportional to 2,972.76, 4,104.18 and 1,926.78 is: 2,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.76 : 4,104.18 = 1,926.78 : x
  2. Step 2: Convert to fraction form
    2,972.76/4,104.18 = 1,926.78/x
  3. Step 3: Cross multiply
    2,972.76x = 4,104.18 × 1,926.78
  4. Step 4: Simplify right side
    2,972.76x = 7,907,851.94
  5. Step 5: Solve for x
    x = 7,907,851.94/2,972.76
  6. Step 6: Final answer
    x = 2,660.10

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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.