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Finding the Fourth Proportional to 3,209, 4,814.40 and 1,235.53

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Solution

The fourth proportional to 3,209, 4,814.40 and 1,235.53 is: 1,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209 : 4,814.40 = 1,235.53 : x
  2. Step 2: Convert to fraction form
    3,209/4,814.40 = 1,235.53/x
  3. Step 3: Cross multiply
    3,209x = 4,814.40 × 1,235.53
  4. Step 4: Simplify right side
    3,209x = 5,948,335.63
  5. Step 5: Solve for x
    x = 5,948,335.63/3,209
  6. Step 6: Final answer
    x = 1,853.64

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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.