Home / 1,645.07-2,466.32-1,123.79

Finding the Fourth Proportional to 1,645.07, 2,466.32 and 1,123.79

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Solution

The fourth proportional to 1,645.07, 2,466.32 and 1,123.79 is: 1,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.07 : 2,466.32 = 1,123.79 : x
  2. Step 2: Convert to fraction form
    1,645.07/2,466.32 = 1,123.79/x
  3. Step 3: Cross multiply
    1,645.07x = 2,466.32 × 1,123.79
  4. Step 4: Simplify right side
    1,645.07x = 2,771,607.80
  5. Step 5: Solve for x
    x = 2,771,607.80/1,645.07
  6. Step 6: Final answer
    x = 1,684.80

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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.