Home / 4,197.80-5,786.96-2,869.40

Finding the Fourth Proportional to 4,197.80, 5,786.96 and 2,869.40

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Solution

The fourth proportional to 4,197.80, 5,786.96 and 2,869.40 is: 3,955.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,197.80 : 5,786.96 = 2,869.40 : x
  2. Step 2: Convert to fraction form
    4,197.80/5,786.96 = 2,869.40/x
  3. Step 3: Cross multiply
    4,197.80x = 5,786.96 × 2,869.40
  4. Step 4: Simplify right side
    4,197.80x = 16,605,103.02
  5. Step 5: Solve for x
    x = 16,605,103.02/4,197.80
  6. Step 6: Final answer
    x = 3,955.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.