Home / 2,867.30-4,300.95-919.70

Finding the Fourth Proportional to 2,867.30, 4,300.95 and 919.70

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Solution

The fourth proportional to 2,867.30, 4,300.95 and 919.70 is: 1,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.30 : 4,300.95 = 919.70 : x
  2. Step 2: Convert to fraction form
    2,867.30/4,300.95 = 919.70/x
  3. Step 3: Cross multiply
    2,867.30x = 4,300.95 × 919.70
  4. Step 4: Simplify right side
    2,867.30x = 3,955,583.72
  5. Step 5: Solve for x
    x = 3,955,583.72/2,867.30
  6. Step 6: Final answer
    x = 1,379.55

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Similar ratio
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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.