Home / 2,318.38-3,475.87-857.54

Finding the Fourth Proportional to 2,318.38, 3,475.87 and 857.54

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Solution

The fourth proportional to 2,318.38, 3,475.87 and 857.54 is: 1,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.38 : 3,475.87 = 857.54 : x
  2. Step 2: Convert to fraction form
    2,318.38/3,475.87 = 857.54/x
  3. Step 3: Cross multiply
    2,318.38x = 3,475.87 × 857.54
  4. Step 4: Simplify right side
    2,318.38x = 2,980,697.56
  5. Step 5: Solve for x
    x = 2,980,697.56/2,318.38
  6. Step 6: Final answer
    x = 1,285.68

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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.