Home / 4,415.28-6,612.84-2,108.40

Finding the Fourth Proportional to 4,415.28, 6,612.84 and 2,108.40

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Solution

The fourth proportional to 4,415.28, 6,612.84 and 2,108.40 is: 3,157.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,415.28 : 6,612.84 = 2,108.40 : x
  2. Step 2: Convert to fraction form
    4,415.28/6,612.84 = 2,108.40/x
  3. Step 3: Cross multiply
    4,415.28x = 6,612.84 × 2,108.40
  4. Step 4: Simplify right side
    4,415.28x = 13,942,511.86
  5. Step 5: Solve for x
    x = 13,942,511.86/4,415.28
  6. Step 6: Final answer
    x = 3,157.79

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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.