Home / 1,327.44-1,991.12-1,247.24

Finding the Fourth Proportional to 1,327.44, 1,991.12 and 1,247.24

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Solution

The fourth proportional to 1,327.44, 1,991.12 and 1,247.24 is: 1,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.44 : 1,991.12 = 1,247.24 : x
  2. Step 2: Convert to fraction form
    1,327.44/1,991.12 = 1,247.24/x
  3. Step 3: Cross multiply
    1,327.44x = 1,991.12 × 1,247.24
  4. Step 4: Simplify right side
    1,327.44x = 2,483,404.51
  5. Step 5: Solve for x
    x = 2,483,404.51/1,327.44
  6. Step 6: Final answer
    x = 1,870.82

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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.