Home / 2,187.10-3,277.05-1,603.90

Finding the Fourth Proportional to 2,187.10, 3,277.05 and 1,603.90

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Solution

The fourth proportional to 2,187.10, 3,277.05 and 1,603.90 is: 2,403.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.10 : 3,277.05 = 1,603.90 : x
  2. Step 2: Convert to fraction form
    2,187.10/3,277.05 = 1,603.90/x
  3. Step 3: Cross multiply
    2,187.10x = 3,277.05 × 1,603.90
  4. Step 4: Simplify right side
    2,187.10x = 5,256,060.50
  5. Step 5: Solve for x
    x = 5,256,060.50/2,187.10
  6. Step 6: Final answer
    x = 2,403.21

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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.