Home / 6,423.20-8,866.80-3,906.10

Finding the Fourth Proportional to 6,423.20, 8,866.80 and 3,906.10

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Solution

The fourth proportional to 6,423.20, 8,866.80 and 3,906.10 is: 5,392.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.20 : 8,866.80 = 3,906.10 : x
  2. Step 2: Convert to fraction form
    6,423.20/8,866.80 = 3,906.10/x
  3. Step 3: Cross multiply
    6,423.20x = 8,866.80 × 3,906.10
  4. Step 4: Simplify right side
    6,423.20x = 34,634,607.48
  5. Step 5: Solve for x
    x = 34,634,607.48/6,423.20
  6. Step 6: Final answer
    x = 5,392.11

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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.