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Finding the Fourth Proportional to 3,291.66, 4,938.48 and 1,904.68

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Solution

The fourth proportional to 3,291.66, 4,938.48 and 1,904.68 is: 2,857.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.66 : 4,938.48 = 1,904.68 : x
  2. Step 2: Convert to fraction form
    3,291.66/4,938.48 = 1,904.68/x
  3. Step 3: Cross multiply
    3,291.66x = 4,938.48 × 1,904.68
  4. Step 4: Simplify right side
    3,291.66x = 9,406,224.09
  5. Step 5: Solve for x
    x = 9,406,224.09/3,291.66
  6. Step 6: Final answer
    x = 2,857.59

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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.