Home / 3,860.28-5,322.96-2,867.40

Finding the Fourth Proportional to 3,860.28, 5,322.96 and 2,867.40

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Solution

The fourth proportional to 3,860.28, 5,322.96 and 2,867.40 is: 3,953.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.28 : 5,322.96 = 2,867.40 : x
  2. Step 2: Convert to fraction form
    3,860.28/5,322.96 = 2,867.40/x
  3. Step 3: Cross multiply
    3,860.28x = 5,322.96 × 2,867.40
  4. Step 4: Simplify right side
    3,860.28x = 15,263,055.50
  5. Step 5: Solve for x
    x = 15,263,055.50/3,860.28
  6. Step 6: Final answer
    x = 3,953.87

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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.