Home / 3,685.80-5,528.70-3,314.60

Finding the Fourth Proportional to 3,685.80, 5,528.70 and 3,314.60

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Solution

The fourth proportional to 3,685.80, 5,528.70 and 3,314.60 is: 4,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.80 : 5,528.70 = 3,314.60 : x
  2. Step 2: Convert to fraction form
    3,685.80/5,528.70 = 3,314.60/x
  3. Step 3: Cross multiply
    3,685.80x = 5,528.70 × 3,314.60
  4. Step 4: Simplify right side
    3,685.80x = 18,325,429.02
  5. Step 5: Solve for x
    x = 18,325,429.02/3,685.80
  6. Step 6: Final answer
    x = 4,971.90

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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.