Home / 3,611.12-5,415.53-1,270.49

Finding the Fourth Proportional to 3,611.12, 5,415.53 and 1,270.49

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Solution

The fourth proportional to 3,611.12, 5,415.53 and 1,270.49 is: 1,905.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.12 : 5,415.53 = 1,270.49 : x
  2. Step 2: Convert to fraction form
    3,611.12/5,415.53 = 1,270.49/x
  3. Step 3: Cross multiply
    3,611.12x = 5,415.53 × 1,270.49
  4. Step 4: Simplify right side
    3,611.12x = 6,880,343.28
  5. Step 5: Solve for x
    x = 6,880,343.28/3,611.12
  6. Step 6: Final answer
    x = 1,905.32

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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.