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Finding the Fourth Proportional to 5,273.46, 7,909.08 and 1,986.48

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Solution

The fourth proportional to 5,273.46, 7,909.08 and 1,986.48 is: 2,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,273.46 : 7,909.08 = 1,986.48 : x
  2. Step 2: Convert to fraction form
    5,273.46/7,909.08 = 1,986.48/x
  3. Step 3: Cross multiply
    5,273.46x = 7,909.08 × 1,986.48
  4. Step 4: Simplify right side
    5,273.46x = 15,711,229.24
  5. Step 5: Solve for x
    x = 15,711,229.24/5,273.46
  6. Step 6: Final answer
    x = 2,979.30

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1.5x scale

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.