Home / 1,603.23-2,405.67-1,213.11

Finding the Fourth Proportional to 1,603.23, 2,405.67 and 1,213.11

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Solution

The fourth proportional to 1,603.23, 2,405.67 and 1,213.11 is: 1,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.23 : 2,405.67 = 1,213.11 : x
  2. Step 2: Convert to fraction form
    1,603.23/2,405.67 = 1,213.11/x
  3. Step 3: Cross multiply
    1,603.23x = 2,405.67 × 1,213.11
  4. Step 4: Simplify right side
    1,603.23x = 2,918,350.82
  5. Step 5: Solve for x
    x = 2,918,350.82/1,603.23
  6. Step 6: Final answer
    x = 1,820.30

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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.