Home / 1,621.80-2,237.30-1,400.68

Finding the Fourth Proportional to 1,621.80, 2,237.30 and 1,400.68

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Solution

The fourth proportional to 1,621.80, 2,237.30 and 1,400.68 is: 1,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.80 : 2,237.30 = 1,400.68 : x
  2. Step 2: Convert to fraction form
    1,621.80/2,237.30 = 1,400.68/x
  3. Step 3: Cross multiply
    1,621.80x = 2,237.30 × 1,400.68
  4. Step 4: Simplify right side
    1,621.80x = 3,133,741.36
  5. Step 5: Solve for x
    x = 3,133,741.36/1,621.80
  6. Step 6: Final answer
    x = 1,932.26

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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.