Home / 1,621.34-2,431.99-1,332.17

Finding the Fourth Proportional to 1,621.34, 2,431.99 and 1,332.17

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Solution

The fourth proportional to 1,621.34, 2,431.99 and 1,332.17 is: 1,998.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.34 : 2,431.99 = 1,332.17 : x
  2. Step 2: Convert to fraction form
    1,621.34/2,431.99 = 1,332.17/x
  3. Step 3: Cross multiply
    1,621.34x = 2,431.99 × 1,332.17
  4. Step 4: Simplify right side
    1,621.34x = 3,239,824.12
  5. Step 5: Solve for x
    x = 3,239,824.12/1,621.34
  6. Step 6: Final answer
    x = 1,998.24

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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.