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Finding the Fourth Proportional to 3,491.07, 4,817.75 and 1,897.80

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Solution

The fourth proportional to 3,491.07, 4,817.75 and 1,897.80 is: 2,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.07 : 4,817.75 = 1,897.80 : x
  2. Step 2: Convert to fraction form
    3,491.07/4,817.75 = 1,897.80/x
  3. Step 3: Cross multiply
    3,491.07x = 4,817.75 × 1,897.80
  4. Step 4: Simplify right side
    3,491.07x = 9,143,155.06
  5. Step 5: Solve for x
    x = 9,143,155.06/3,491.07
  6. Step 6: Final answer
    x = 2,619.02

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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.