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Finding the Fourth Proportional to 5,783.16, 7,981.20 and 3,425.79

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Solution

The fourth proportional to 5,783.16, 7,981.20 and 3,425.79 is: 4,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,783.16 : 7,981.20 = 3,425.79 : x
  2. Step 2: Convert to fraction form
    5,783.16/7,981.20 = 3,425.79/x
  3. Step 3: Cross multiply
    5,783.16x = 7,981.20 × 3,425.79
  4. Step 4: Simplify right side
    5,783.16x = 27,341,915.15
  5. Step 5: Solve for x
    x = 27,341,915.15/5,783.16
  6. Step 6: Final answer
    x = 4,727.85

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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.