Home / 3,420.32-4,719.96-1,907.90

Finding the Fourth Proportional to 3,420.32, 4,719.96 and 1,907.90

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Solution

The fourth proportional to 3,420.32, 4,719.96 and 1,907.90 is: 2,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.32 : 4,719.96 = 1,907.90 : x
  2. Step 2: Convert to fraction form
    3,420.32/4,719.96 = 1,907.90/x
  3. Step 3: Cross multiply
    3,420.32x = 4,719.96 × 1,907.90
  4. Step 4: Simplify right side
    3,420.32x = 9,005,188.08
  5. Step 5: Solve for x
    x = 9,005,188.08/3,420.32
  6. Step 6: Final answer
    x = 2,632.85

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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.