Home / 1,310.44-1,962.30-1,115.08

Finding the Fourth Proportional to 1,310.44, 1,962.30 and 1,115.08

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Solution

The fourth proportional to 1,310.44, 1,962.30 and 1,115.08 is: 1,669.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.44 : 1,962.30 = 1,115.08 : x
  2. Step 2: Convert to fraction form
    1,310.44/1,962.30 = 1,115.08/x
  3. Step 3: Cross multiply
    1,310.44x = 1,962.30 × 1,115.08
  4. Step 4: Simplify right side
    1,310.44x = 2,188,121.48
  5. Step 5: Solve for x
    x = 2,188,121.48/1,310.44
  6. Step 6: Final answer
    x = 1,669.76

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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.