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Finding the Fourth Proportional to 6,480.90, 9,719.31 and 2,097.45

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Solution

The fourth proportional to 6,480.90, 9,719.31 and 2,097.45 is: 3,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.90 : 9,719.31 = 2,097.45 : x
  2. Step 2: Convert to fraction form
    6,480.90/9,719.31 = 2,097.45/x
  3. Step 3: Cross multiply
    6,480.90x = 9,719.31 × 2,097.45
  4. Step 4: Simplify right side
    6,480.90x = 20,385,766.76
  5. Step 5: Solve for x
    x = 20,385,766.76/6,480.90
  6. Step 6: Final answer
    x = 3,145.51

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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.