Home / 7,215.38-10,823.10-2,021.12

Finding the Fourth Proportional to 7,215.38, 10,823.10 and 2,021.12

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Solution

The fourth proportional to 7,215.38, 10,823.10 and 2,021.12 is: 3,031.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.38 : 10,823.10 = 2,021.12 : x
  2. Step 2: Convert to fraction form
    7,215.38/10,823.10 = 2,021.12/x
  3. Step 3: Cross multiply
    7,215.38x = 10,823.10 × 2,021.12
  4. Step 4: Simplify right side
    7,215.38x = 21,874,783.87
  5. Step 5: Solve for x
    x = 21,874,783.87/7,215.38
  6. Step 6: Final answer
    x = 3,031.69

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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.