Home / 7,256.37-10,883.75-1,991.78

Finding the Fourth Proportional to 7,256.37, 10,883.75 and 1,991.78

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Solution

The fourth proportional to 7,256.37, 10,883.75 and 1,991.78 is: 2,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,256.37 : 10,883.75 = 1,991.78 : x
  2. Step 2: Convert to fraction form
    7,256.37/10,883.75 = 1,991.78/x
  3. Step 3: Cross multiply
    7,256.37x = 10,883.75 × 1,991.78
  4. Step 4: Simplify right side
    7,256.37x = 21,678,035.58
  5. Step 5: Solve for x
    x = 21,678,035.58/7,256.37
  6. Step 6: Final answer
    x = 2,987.45

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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.