Home / 1,669.22-2,302.60-1,005.68

Finding the Fourth Proportional to 1,669.22, 2,302.60 and 1,005.68

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Solution

The fourth proportional to 1,669.22, 2,302.60 and 1,005.68 is: 1,387.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.22 : 2,302.60 = 1,005.68 : x
  2. Step 2: Convert to fraction form
    1,669.22/2,302.60 = 1,005.68/x
  3. Step 3: Cross multiply
    1,669.22x = 2,302.60 × 1,005.68
  4. Step 4: Simplify right side
    1,669.22x = 2,315,678.77
  5. Step 5: Solve for x
    x = 2,315,678.77/1,669.22
  6. Step 6: Final answer
    x = 1,387.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.