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Finding the Fourth Proportional to 6,989.96, 10,485.07 and 1,724.99

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Solution

The fourth proportional to 6,989.96, 10,485.07 and 1,724.99 is: 2,587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.96 : 10,485.07 = 1,724.99 : x
  2. Step 2: Convert to fraction form
    6,989.96/10,485.07 = 1,724.99/x
  3. Step 3: Cross multiply
    6,989.96x = 10,485.07 × 1,724.99
  4. Step 4: Simplify right side
    6,989.96x = 18,086,584.16
  5. Step 5: Solve for x
    x = 18,086,584.16/6,989.96
  6. Step 6: Final answer
    x = 2,587.51

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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.