Home / 1,548.20-2,322.35-669.80

Finding the Fourth Proportional to 1,548.20, 2,322.35 and 669.80

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Solution

The fourth proportional to 1,548.20, 2,322.35 and 669.80 is: 1,004.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.20 : 2,322.35 = 669.80 : x
  2. Step 2: Convert to fraction form
    1,548.20/2,322.35 = 669.80/x
  3. Step 3: Cross multiply
    1,548.20x = 2,322.35 × 669.80
  4. Step 4: Simplify right side
    1,548.20x = 1,555,506.68
  5. Step 5: Solve for x
    x = 1,555,506.68/1,548.20
  6. Step 6: Final answer
    x = 1,004.72

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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.