Home / 6,910.20-10,373.40-4,139.40

Finding the Fourth Proportional to 6,910.20, 10,373.40 and 4,139.40

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Solution

The fourth proportional to 6,910.20, 10,373.40 and 4,139.40 is: 6,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,910.20 : 10,373.40 = 4,139.40 : x
  2. Step 2: Convert to fraction form
    6,910.20/10,373.40 = 4,139.40/x
  3. Step 3: Cross multiply
    6,910.20x = 10,373.40 × 4,139.40
  4. Step 4: Simplify right side
    6,910.20x = 42,939,651.96
  5. Step 5: Solve for x
    x = 42,939,651.96/6,910.20
  6. Step 6: Final answer
    x = 6,213.95

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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.