Home / 3,168.10-4,752.15-1,318.60

Finding the Fourth Proportional to 3,168.10, 4,752.15 and 1,318.60

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Solution

The fourth proportional to 3,168.10, 4,752.15 and 1,318.60 is: 1,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.10 : 4,752.15 = 1,318.60 : x
  2. Step 2: Convert to fraction form
    3,168.10/4,752.15 = 1,318.60/x
  3. Step 3: Cross multiply
    3,168.10x = 4,752.15 × 1,318.60
  4. Step 4: Simplify right side
    3,168.10x = 6,266,184.99
  5. Step 5: Solve for x
    x = 6,266,184.99/3,168.10
  6. Step 6: Final answer
    x = 1,977.90

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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.