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Finding the Fourth Proportional to 1,904.40, 2,624.04 and 1,372.68

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Solution

The fourth proportional to 1,904.40, 2,624.04 and 1,372.68 is: 1,891.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,904.40 : 2,624.04 = 1,372.68 : x
  2. Step 2: Convert to fraction form
    1,904.40/2,624.04 = 1,372.68/x
  3. Step 3: Cross multiply
    1,904.40x = 2,624.04 × 1,372.68
  4. Step 4: Simplify right side
    1,904.40x = 3,601,967.23
  5. Step 5: Solve for x
    x = 3,601,967.23/1,904.40
  6. Step 6: Final answer
    x = 1,891.39

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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.