Home / 2,603.45-3,909.43-2,195.21

Finding the Fourth Proportional to 2,603.45, 3,909.43 and 2,195.21

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Solution

The fourth proportional to 2,603.45, 3,909.43 and 2,195.21 is: 3,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.45 : 3,909.43 = 2,195.21 : x
  2. Step 2: Convert to fraction form
    2,603.45/3,909.43 = 2,195.21/x
  3. Step 3: Cross multiply
    2,603.45x = 3,909.43 × 2,195.21
  4. Step 4: Simplify right side
    2,603.45x = 8,582,032.35
  5. Step 5: Solve for x
    x = 8,582,032.35/2,603.45
  6. Step 6: Final answer
    x = 3,296.40

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1.5x scale

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.