Home / 7,215.16-10,822.49-2,771.68

Finding the Fourth Proportional to 7,215.16, 10,822.49 and 2,771.68

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Solution

The fourth proportional to 7,215.16, 10,822.49 and 2,771.68 is: 4,157.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.16 : 10,822.49 = 2,771.68 : x
  2. Step 2: Convert to fraction form
    7,215.16/10,822.49 = 2,771.68/x
  3. Step 3: Cross multiply
    7,215.16x = 10,822.49 × 2,771.68
  4. Step 4: Simplify right side
    7,215.16x = 29,996,465.22
  5. Step 5: Solve for x
    x = 29,996,465.22/7,215.16
  6. Step 6: Final answer
    x = 4,157.42

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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.