Home / 7,825.08-11,738.05-1,981.74

Finding the Fourth Proportional to 7,825.08, 11,738.05 and 1,981.74

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Solution

The fourth proportional to 7,825.08, 11,738.05 and 1,981.74 is: 2,972.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,825.08 : 11,738.05 = 1,981.74 : x
  2. Step 2: Convert to fraction form
    7,825.08/11,738.05 = 1,981.74/x
  3. Step 3: Cross multiply
    7,825.08x = 11,738.05 × 1,981.74
  4. Step 4: Simplify right side
    7,825.08x = 23,261,797.51
  5. Step 5: Solve for x
    x = 23,261,797.51/7,825.08
  6. Step 6: Final answer
    x = 2,972.72

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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.