Home / 3,215.55-4,438.91-1,889.34

Finding the Fourth Proportional to 3,215.55, 4,438.91 and 1,889.34

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Solution

The fourth proportional to 3,215.55, 4,438.91 and 1,889.34 is: 2,608.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.55 : 4,438.91 = 1,889.34 : x
  2. Step 2: Convert to fraction form
    3,215.55/4,438.91 = 1,889.34/x
  3. Step 3: Cross multiply
    3,215.55x = 4,438.91 × 1,889.34
  4. Step 4: Simplify right side
    3,215.55x = 8,386,610.22
  5. Step 5: Solve for x
    x = 8,386,610.22/3,215.55
  6. Step 6: Final answer
    x = 2,608.14

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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.