Home / 5,128.16-7,678.52-3,269.20

Finding the Fourth Proportional to 5,128.16, 7,678.52 and 3,269.20

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Solution

The fourth proportional to 5,128.16, 7,678.52 and 3,269.20 is: 4,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.16 : 7,678.52 = 3,269.20 : x
  2. Step 2: Convert to fraction form
    5,128.16/7,678.52 = 3,269.20/x
  3. Step 3: Cross multiply
    5,128.16x = 7,678.52 × 3,269.20
  4. Step 4: Simplify right side
    5,128.16x = 25,102,617.58
  5. Step 5: Solve for x
    x = 25,102,617.58/5,128.16
  6. Step 6: Final answer
    x = 4,895.05

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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.