Home / 7,215.40-10,823.37-2,021.14

Finding the Fourth Proportional to 7,215.40, 10,823.37 and 2,021.14

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Solution

The fourth proportional to 7,215.40, 10,823.37 and 2,021.14 is: 3,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.40 : 10,823.37 = 2,021.14 : x
  2. Step 2: Convert to fraction form
    7,215.40/10,823.37 = 2,021.14/x
  3. Step 3: Cross multiply
    7,215.40x = 10,823.37 × 2,021.14
  4. Step 4: Simplify right side
    7,215.40x = 21,875,546.04
  5. Step 5: Solve for x
    x = 21,875,546.04/7,215.40
  6. Step 6: Final answer
    x = 3,031.79

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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.