Home / 2,972.74-4,102.86-1,927.84

Finding the Fourth Proportional to 2,972.74, 4,102.86 and 1,927.84

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Solution

The fourth proportional to 2,972.74, 4,102.86 and 1,927.84 is: 2,660.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.74 : 4,102.86 = 1,927.84 : x
  2. Step 2: Convert to fraction form
    2,972.74/4,102.86 = 1,927.84/x
  3. Step 3: Cross multiply
    2,972.74x = 4,102.86 × 1,927.84
  4. Step 4: Simplify right side
    2,972.74x = 7,909,657.62
  5. Step 5: Solve for x
    x = 7,909,657.62/2,972.74
  6. Step 6: Final answer
    x = 2,660.73

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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.