Home / 2,891.58-4,336.08-1,331.20

Finding the Fourth Proportional to 2,891.58, 4,336.08 and 1,331.20

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Solution

The fourth proportional to 2,891.58, 4,336.08 and 1,331.20 is: 1,996.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.58 : 4,336.08 = 1,331.20 : x
  2. Step 2: Convert to fraction form
    2,891.58/4,336.08 = 1,331.20/x
  3. Step 3: Cross multiply
    2,891.58x = 4,336.08 × 1,331.20
  4. Step 4: Simplify right side
    2,891.58x = 5,772,189.70
  5. Step 5: Solve for x
    x = 5,772,189.70/2,891.58
  6. Step 6: Final answer
    x = 1,996.21

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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.