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Finding the Fourth Proportional to 6,561.54, 9,054.45 and 3,909.87

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Solution

The fourth proportional to 6,561.54, 9,054.45 and 3,909.87 is: 5,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,561.54 : 9,054.45 = 3,909.87 : x
  2. Step 2: Convert to fraction form
    6,561.54/9,054.45 = 3,909.87/x
  3. Step 3: Cross multiply
    6,561.54x = 9,054.45 × 3,909.87
  4. Step 4: Simplify right side
    6,561.54x = 35,401,722.42
  5. Step 5: Solve for x
    x = 35,401,722.42/6,561.54
  6. Step 6: Final answer
    x = 5,395.34

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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.