Home / 5,215.21-7,195.48-3,118.93

Finding the Fourth Proportional to 5,215.21, 7,195.48 and 3,118.93

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Solution

The fourth proportional to 5,215.21, 7,195.48 and 3,118.93 is: 4,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.21 : 7,195.48 = 3,118.93 : x
  2. Step 2: Convert to fraction form
    5,215.21/7,195.48 = 3,118.93/x
  3. Step 3: Cross multiply
    5,215.21x = 7,195.48 × 3,118.93
  4. Step 4: Simplify right side
    5,215.21x = 22,442,198.44
  5. Step 5: Solve for x
    x = 22,442,198.44/5,215.21
  6. Step 6: Final answer
    x = 4,303.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.