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Finding the Fourth Proportional to 2,137.87, 3,204.37 and 904.51

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Solution

The fourth proportional to 2,137.87, 3,204.37 and 904.51 is: 1,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.87 : 3,204.37 = 904.51 : x
  2. Step 2: Convert to fraction form
    2,137.87/3,204.37 = 904.51/x
  3. Step 3: Cross multiply
    2,137.87x = 3,204.37 × 904.51
  4. Step 4: Simplify right side
    2,137.87x = 2,898,384.71
  5. Step 5: Solve for x
    x = 2,898,384.71/2,137.87
  6. Step 6: Final answer
    x = 1,355.73

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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.