Home / 1,438.50-2,159.57-1,223.45

Finding the Fourth Proportional to 1,438.50, 2,159.57 and 1,223.45

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Solution

The fourth proportional to 1,438.50, 2,159.57 and 1,223.45 is: 1,836.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.50 : 2,159.57 = 1,223.45 : x
  2. Step 2: Convert to fraction form
    1,438.50/2,159.57 = 1,223.45/x
  3. Step 3: Cross multiply
    1,438.50x = 2,159.57 × 1,223.45
  4. Step 4: Simplify right side
    1,438.50x = 2,642,109.00
  5. Step 5: Solve for x
    x = 2,642,109.00/1,438.50
  6. Step 6: Final answer
    x = 1,836.71

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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.