Home / 4,878.38-7,318.76-1,415.63

Finding the Fourth Proportional to 4,878.38, 7,318.76 and 1,415.63

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Solution

The fourth proportional to 4,878.38, 7,318.76 and 1,415.63 is: 2,123.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.38 : 7,318.76 = 1,415.63 : x
  2. Step 2: Convert to fraction form
    4,878.38/7,318.76 = 1,415.63/x
  3. Step 3: Cross multiply
    4,878.38x = 7,318.76 × 1,415.63
  4. Step 4: Simplify right side
    4,878.38x = 10,360,626.27
  5. Step 5: Solve for x
    x = 10,360,626.27/4,878.38
  6. Step 6: Final answer
    x = 2,123.79

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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.