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Finding the Fourth Proportional to 2,651.63, 3,659.58 and 1,603.70

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Solution

The fourth proportional to 2,651.63, 3,659.58 and 1,603.70 is: 2,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.63 : 3,659.58 = 1,603.70 : x
  2. Step 2: Convert to fraction form
    2,651.63/3,659.58 = 1,603.70/x
  3. Step 3: Cross multiply
    2,651.63x = 3,659.58 × 1,603.70
  4. Step 4: Simplify right side
    2,651.63x = 5,868,850.15
  5. Step 5: Solve for x
    x = 5,868,850.15/2,651.63
  6. Step 6: Final answer
    x = 2,213.30

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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.