Home / 1,579.90-2,369.57-425.38

Finding the Fourth Proportional to 1,579.90, 2,369.57 and 425.38

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Solution

The fourth proportional to 1,579.90, 2,369.57 and 425.38 is: 637.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.90 : 2,369.57 = 425.38 : x
  2. Step 2: Convert to fraction form
    1,579.90/2,369.57 = 425.38/x
  3. Step 3: Cross multiply
    1,579.90x = 2,369.57 × 425.38
  4. Step 4: Simplify right side
    1,579.90x = 1,007,956.90
  5. Step 5: Solve for x
    x = 1,007,956.90/1,579.90
  6. Step 6: Final answer
    x = 637.99

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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.