Home / 8,428.38-11,629.14-5,443.62

Finding the Fourth Proportional to 8,428.38, 11,629.14 and 5,443.62

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Solution

The fourth proportional to 8,428.38, 11,629.14 and 5,443.62 is: 7,510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.38 : 11,629.14 = 5,443.62 : x
  2. Step 2: Convert to fraction form
    8,428.38/11,629.14 = 5,443.62/x
  3. Step 3: Cross multiply
    8,428.38x = 11,629.14 × 5,443.62
  4. Step 4: Simplify right side
    8,428.38x = 63,304,619.09
  5. Step 5: Solve for x
    x = 63,304,619.09/8,428.38
  6. Step 6: Final answer
    x = 7,510.89

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1.5x scale

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.