Home / 2,867.58-4,301.30-919.80

Finding the Fourth Proportional to 2,867.58, 4,301.30 and 919.80

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Solution

The fourth proportional to 2,867.58, 4,301.30 and 919.80 is: 1,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.58 : 4,301.30 = 919.80 : x
  2. Step 2: Convert to fraction form
    2,867.58/4,301.30 = 919.80/x
  3. Step 3: Cross multiply
    2,867.58x = 4,301.30 × 919.80
  4. Step 4: Simplify right side
    2,867.58x = 3,956,338.04
  5. Step 5: Solve for x
    x = 3,956,338.04/2,867.58
  6. Step 6: Final answer
    x = 1,379.68

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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.