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Finding the Fourth Proportional to 2,539.52, 3,505.10 and 1,491.80

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Solution

The fourth proportional to 2,539.52, 3,505.10 and 1,491.80 is: 2,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.52 : 3,505.10 = 1,491.80 : x
  2. Step 2: Convert to fraction form
    2,539.52/3,505.10 = 1,491.80/x
  3. Step 3: Cross multiply
    2,539.52x = 3,505.10 × 1,491.80
  4. Step 4: Simplify right side
    2,539.52x = 5,228,908.18
  5. Step 5: Solve for x
    x = 5,228,908.18/2,539.52
  6. Step 6: Final answer
    x = 2,059.01

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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.