Home / 7,256.84-10,885.23-1,991.90

Finding the Fourth Proportional to 7,256.84, 10,885.23 and 1,991.90

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Solution

The fourth proportional to 7,256.84, 10,885.23 and 1,991.90 is: 2,987.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,256.84 : 10,885.23 = 1,991.90 : x
  2. Step 2: Convert to fraction form
    7,256.84/10,885.23 = 1,991.90/x
  3. Step 3: Cross multiply
    7,256.84x = 10,885.23 × 1,991.90
  4. Step 4: Simplify right side
    7,256.84x = 21,682,316.85
  5. Step 5: Solve for x
    x = 21,682,316.85/7,256.84
  6. Step 6: Final answer
    x = 2,987.85

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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.