Home / 2,220.75-3,332.64-1,438.81

Finding the Fourth Proportional to 2,220.75, 3,332.64 and 1,438.81

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Solution

The fourth proportional to 2,220.75, 3,332.64 and 1,438.81 is: 2,159.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.75 : 3,332.64 = 1,438.81 : x
  2. Step 2: Convert to fraction form
    2,220.75/3,332.64 = 1,438.81/x
  3. Step 3: Cross multiply
    2,220.75x = 3,332.64 × 1,438.81
  4. Step 4: Simplify right side
    2,220.75x = 4,795,032.82
  5. Step 5: Solve for x
    x = 4,795,032.82/2,220.75
  6. Step 6: Final answer
    x = 2,159.20

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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.