Home / 3,970.40-5,955.60-1,197.05

Finding the Fourth Proportional to 3,970.40, 5,955.60 and 1,197.05

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Solution

The fourth proportional to 3,970.40, 5,955.60 and 1,197.05 is: 1,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.40 : 5,955.60 = 1,197.05 : x
  2. Step 2: Convert to fraction form
    3,970.40/5,955.60 = 1,197.05/x
  3. Step 3: Cross multiply
    3,970.40x = 5,955.60 × 1,197.05
  4. Step 4: Simplify right side
    3,970.40x = 7,129,121.20
  5. Step 5: Solve for x
    x = 7,129,121.20/3,970.40
  6. Step 6: Final answer
    x = 1,795.57

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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.