Home / 1,610.24-2,216.96-1,388.48

Finding the Fourth Proportional to 1,610.24, 2,216.96 and 1,388.48

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Solution

The fourth proportional to 1,610.24, 2,216.96 and 1,388.48 is: 1,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.24 : 2,216.96 = 1,388.48 : x
  2. Step 2: Convert to fraction form
    1,610.24/2,216.96 = 1,388.48/x
  3. Step 3: Cross multiply
    1,610.24x = 2,216.96 × 1,388.48
  4. Step 4: Simplify right side
    1,610.24x = 3,078,204.62
  5. Step 5: Solve for x
    x = 3,078,204.62/1,610.24
  6. Step 6: Final answer
    x = 1,911.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.