Home / 4,378.30-6,561.97-2,187.64

Finding the Fourth Proportional to 4,378.30, 6,561.97 and 2,187.64

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Solution

The fourth proportional to 4,378.30, 6,561.97 and 2,187.64 is: 3,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,378.30 : 6,561.97 = 2,187.64 : x
  2. Step 2: Convert to fraction form
    4,378.30/6,561.97 = 2,187.64/x
  3. Step 3: Cross multiply
    4,378.30x = 6,561.97 × 2,187.64
  4. Step 4: Simplify right side
    4,378.30x = 14,355,228.05
  5. Step 5: Solve for x
    x = 14,355,228.05/4,378.30
  6. Step 6: Final answer
    x = 3,278.72

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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.