Home / 1,788.12-2,462.20-1,621.28

Finding the Fourth Proportional to 1,788.12, 2,462.20 and 1,621.28

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Solution

The fourth proportional to 1,788.12, 2,462.20 and 1,621.28 is: 2,232.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.12 : 2,462.20 = 1,621.28 : x
  2. Step 2: Convert to fraction form
    1,788.12/2,462.20 = 1,621.28/x
  3. Step 3: Cross multiply
    1,788.12x = 2,462.20 × 1,621.28
  4. Step 4: Simplify right side
    1,788.12x = 3,991,917.72
  5. Step 5: Solve for x
    x = 3,991,917.72/1,788.12
  6. Step 6: Final answer
    x = 2,232.47

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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.