Home / 3,647.42-5,031.86-2,231.17

Finding the Fourth Proportional to 3,647.42, 5,031.86 and 2,231.17

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Solution

The fourth proportional to 3,647.42, 5,031.86 and 2,231.17 is: 3,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,647.42 : 5,031.86 = 2,231.17 : x
  2. Step 2: Convert to fraction form
    3,647.42/5,031.86 = 2,231.17/x
  3. Step 3: Cross multiply
    3,647.42x = 5,031.86 × 2,231.17
  4. Step 4: Simplify right side
    3,647.42x = 11,226,911.34
  5. Step 5: Solve for x
    x = 11,226,911.34/3,647.42
  6. Step 6: Final answer
    x = 3,078.05

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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.