Home / 1,621.50-2,427.93-1,329.90

Finding the Fourth Proportional to 1,621.50, 2,427.93 and 1,329.90

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Solution

The fourth proportional to 1,621.50, 2,427.93 and 1,329.90 is: 1,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.50 : 2,427.93 = 1,329.90 : x
  2. Step 2: Convert to fraction form
    1,621.50/2,427.93 = 1,329.90/x
  3. Step 3: Cross multiply
    1,621.50x = 2,427.93 × 1,329.90
  4. Step 4: Simplify right side
    1,621.50x = 3,228,904.11
  5. Step 5: Solve for x
    x = 3,228,904.11/1,621.50
  6. Step 6: Final answer
    x = 1,991.31

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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.