Home / 6,747.20-9,310.84-4,978.16

Finding the Fourth Proportional to 6,747.20, 9,310.84 and 4,978.16

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Solution

The fourth proportional to 6,747.20, 9,310.84 and 4,978.16 is: 6,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,747.20 : 9,310.84 = 4,978.16 : x
  2. Step 2: Convert to fraction form
    6,747.20/9,310.84 = 4,978.16/x
  3. Step 3: Cross multiply
    6,747.20x = 9,310.84 × 4,978.16
  4. Step 4: Simplify right side
    6,747.20x = 46,350,792.25
  5. Step 5: Solve for x
    x = 46,350,792.25/6,747.20
  6. Step 6: Final answer
    x = 6,869.64

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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.