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Finding the Fourth Proportional to 3,603.55, 5,405.32 and 1,657.39

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Solution

The fourth proportional to 3,603.55, 5,405.32 and 1,657.39 is: 2,486.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.55 : 5,405.32 = 1,657.39 : x
  2. Step 2: Convert to fraction form
    3,603.55/5,405.32 = 1,657.39/x
  3. Step 3: Cross multiply
    3,603.55x = 5,405.32 × 1,657.39
  4. Step 4: Simplify right side
    3,603.55x = 8,958,692.14
  5. Step 5: Solve for x
    x = 8,958,692.14/3,603.55
  6. Step 6: Final answer
    x = 2,486.08

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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.