Home / 5,475.20-8,169.28-4,809.92

Finding the Fourth Proportional to 5,475.20, 8,169.28 and 4,809.92

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Solution

The fourth proportional to 5,475.20, 8,169.28 and 4,809.92 is: 7,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.20 : 8,169.28 = 4,809.92 : x
  2. Step 2: Convert to fraction form
    5,475.20/8,169.28 = 4,809.92/x
  3. Step 3: Cross multiply
    5,475.20x = 8,169.28 × 4,809.92
  4. Step 4: Simplify right side
    5,475.20x = 39,293,583.26
  5. Step 5: Solve for x
    x = 39,293,583.26/5,475.20
  6. Step 6: Final answer
    x = 7,176.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.