Home / 3,071.15-4,603.68-1,221.11

Finding the Fourth Proportional to 3,071.15, 4,603.68 and 1,221.11

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Solution

The fourth proportional to 3,071.15, 4,603.68 and 1,221.11 is: 1,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.15 : 4,603.68 = 1,221.11 : x
  2. Step 2: Convert to fraction form
    3,071.15/4,603.68 = 1,221.11/x
  3. Step 3: Cross multiply
    3,071.15x = 4,603.68 × 1,221.11
  4. Step 4: Simplify right side
    3,071.15x = 5,621,576.67
  5. Step 5: Solve for x
    x = 5,621,576.67/3,071.15
  6. Step 6: Final answer
    x = 1,830.45

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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.