Home / 3,655.40-5,486.70-1,808.60

Finding the Fourth Proportional to 3,655.40, 5,486.70 and 1,808.60

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Solution

The fourth proportional to 3,655.40, 5,486.70 and 1,808.60 is: 2,714.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.40 : 5,486.70 = 1,808.60 : x
  2. Step 2: Convert to fraction form
    3,655.40/5,486.70 = 1,808.60/x
  3. Step 3: Cross multiply
    3,655.40x = 5,486.70 × 1,808.60
  4. Step 4: Simplify right side
    3,655.40x = 9,923,245.62
  5. Step 5: Solve for x
    x = 9,923,245.62/3,655.40
  6. Step 6: Final answer
    x = 2,714.68

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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.