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Finding the Fourth Proportional to 2,539, 3,504.30 and 1,435

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Solution

The fourth proportional to 2,539, 3,504.30 and 1,435 is: 1,980.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539 : 3,504.30 = 1,435 : x
  2. Step 2: Convert to fraction form
    2,539/3,504.30 = 1,435/x
  3. Step 3: Cross multiply
    2,539x = 3,504.30 × 1,435
  4. Step 4: Simplify right side
    2,539x = 5,028,670.50
  5. Step 5: Solve for x
    x = 5,028,670.50/2,539
  6. Step 6: Final answer
    x = 1,980.57

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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.