Home / 7,215.90-10,822.86-2,836.43

Finding the Fourth Proportional to 7,215.90, 10,822.86 and 2,836.43

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Solution

The fourth proportional to 7,215.90, 10,822.86 and 2,836.43 is: 4,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.90 : 10,822.86 = 2,836.43 : x
  2. Step 2: Convert to fraction form
    7,215.90/10,822.86 = 2,836.43/x
  3. Step 3: Cross multiply
    7,215.90x = 10,822.86 × 2,836.43
  4. Step 4: Simplify right side
    7,215.90x = 30,698,230.68
  5. Step 5: Solve for x
    x = 30,698,230.68/7,215.90
  6. Step 6: Final answer
    x = 4,254.25

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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.