Home / 7,215.75-10,823.76-2,021.76

Finding the Fourth Proportional to 7,215.75, 10,823.76 and 2,021.76

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Solution

The fourth proportional to 7,215.75, 10,823.76 and 2,021.76 is: 3,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.75 : 10,823.76 = 2,021.76 : x
  2. Step 2: Convert to fraction form
    7,215.75/10,823.76 = 2,021.76/x
  3. Step 3: Cross multiply
    7,215.75x = 10,823.76 × 2,021.76
  4. Step 4: Simplify right side
    7,215.75x = 21,883,045.02
  5. Step 5: Solve for x
    x = 21,883,045.02/7,215.75
  6. Step 6: Final answer
    x = 3,032.68

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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.