Home / 1,663.56-2,282.34-1,620.45

Finding the Fourth Proportional to 1,663.56, 2,282.34 and 1,620.45

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Solution

The fourth proportional to 1,663.56, 2,282.34 and 1,620.45 is: 2,223.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.56 : 2,282.34 = 1,620.45 : x
  2. Step 2: Convert to fraction form
    1,663.56/2,282.34 = 1,620.45/x
  3. Step 3: Cross multiply
    1,663.56x = 2,282.34 × 1,620.45
  4. Step 4: Simplify right side
    1,663.56x = 3,698,417.85
  5. Step 5: Solve for x
    x = 3,698,417.85/1,663.56
  6. Step 6: Final answer
    x = 2,223.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.