Home / 7,021.40-10,531.99-2,091.07

Finding the Fourth Proportional to 7,021.40, 10,531.99 and 2,091.07

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Solution

The fourth proportional to 7,021.40, 10,531.99 and 2,091.07 is: 3,136.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.40 : 10,531.99 = 2,091.07 : x
  2. Step 2: Convert to fraction form
    7,021.40/10,531.99 = 2,091.07/x
  3. Step 3: Cross multiply
    7,021.40x = 10,531.99 × 2,091.07
  4. Step 4: Simplify right side
    7,021.40x = 22,023,065.21
  5. Step 5: Solve for x
    x = 22,023,065.21/7,021.40
  6. Step 6: Final answer
    x = 3,136.56

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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.