Home / 1,644.24-2,465.68-669.68

Finding the Fourth Proportional to 1,644.24, 2,465.68 and 669.68

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Solution

The fourth proportional to 1,644.24, 2,465.68 and 669.68 is: 1,004.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.24 : 2,465.68 = 669.68 : x
  2. Step 2: Convert to fraction form
    1,644.24/2,465.68 = 669.68/x
  3. Step 3: Cross multiply
    1,644.24x = 2,465.68 × 669.68
  4. Step 4: Simplify right side
    1,644.24x = 1,651,216.58
  5. Step 5: Solve for x
    x = 1,651,216.58/1,644.24
  6. Step 6: Final answer
    x = 1,004.24

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1.5x scale

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.