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Finding the Fourth Proportional to 4,950.48, 6,830.28 and 3,899.28

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Solution

The fourth proportional to 4,950.48, 6,830.28 and 3,899.28 is: 5,379.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,950.48 : 6,830.28 = 3,899.28 : x
  2. Step 2: Convert to fraction form
    4,950.48/6,830.28 = 3,899.28/x
  3. Step 3: Cross multiply
    4,950.48x = 6,830.28 × 3,899.28
  4. Step 4: Simplify right side
    4,950.48x = 26,633,174.20
  5. Step 5: Solve for x
    x = 26,633,174.20/4,950.48
  6. Step 6: Final answer
    x = 5,379.92

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1.5x scale

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.