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Finding the Fourth Proportional to 3,907.02, 5,860.50 and 985.32

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Solution

The fourth proportional to 3,907.02, 5,860.50 and 985.32 is: 1,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.02 : 5,860.50 = 985.32 : x
  2. Step 2: Convert to fraction form
    3,907.02/5,860.50 = 985.32/x
  3. Step 3: Cross multiply
    3,907.02x = 5,860.50 × 985.32
  4. Step 4: Simplify right side
    3,907.02x = 5,774,467.86
  5. Step 5: Solve for x
    x = 5,774,467.86/3,907.02
  6. Step 6: Final answer
    x = 1,477.97

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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.