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Finding the Fourth Proportional to 3,590.37, 5,385.47 and 957.87

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Solution

The fourth proportional to 3,590.37, 5,385.47 and 957.87 is: 1,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590.37 : 5,385.47 = 957.87 : x
  2. Step 2: Convert to fraction form
    3,590.37/5,385.47 = 957.87/x
  3. Step 3: Cross multiply
    3,590.37x = 5,385.47 × 957.87
  4. Step 4: Simplify right side
    3,590.37x = 5,158,575.36
  5. Step 5: Solve for x
    x = 5,158,575.36/3,590.37
  6. Step 6: Final answer
    x = 1,436.78

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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.