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Finding the Fourth Proportional to 6,778.80, 9,354.88 and 4,792.80

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Solution

The fourth proportional to 6,778.80, 9,354.88 and 4,792.80 is: 6,614.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,778.80 : 9,354.88 = 4,792.80 : x
  2. Step 2: Convert to fraction form
    6,778.80/9,354.88 = 4,792.80/x
  3. Step 3: Cross multiply
    6,778.80x = 9,354.88 × 4,792.80
  4. Step 4: Simplify right side
    6,778.80x = 44,836,068.86
  5. Step 5: Solve for x
    x = 44,836,068.86/6,778.80
  6. Step 6: Final answer
    x = 6,614.16

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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.