Home / 1,448.42-2,169.56-669.06

Finding the Fourth Proportional to 1,448.42, 2,169.56 and 669.06

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Solution

The fourth proportional to 1,448.42, 2,169.56 and 669.06 is: 1,002.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.42 : 2,169.56 = 669.06 : x
  2. Step 2: Convert to fraction form
    1,448.42/2,169.56 = 669.06/x
  3. Step 3: Cross multiply
    1,448.42x = 2,169.56 × 669.06
  4. Step 4: Simplify right side
    1,448.42x = 1,451,565.81
  5. Step 5: Solve for x
    x = 1,451,565.81/1,448.42
  6. Step 6: Final answer
    x = 1,002.17

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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.