Home / 8,188.20-12,266.10-4,721.40

Finding the Fourth Proportional to 8,188.20, 12,266.10 and 4,721.40

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Solution

The fourth proportional to 8,188.20, 12,266.10 and 4,721.40 is: 7,072.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.20 : 12,266.10 = 4,721.40 : x
  2. Step 2: Convert to fraction form
    8,188.20/12,266.10 = 4,721.40/x
  3. Step 3: Cross multiply
    8,188.20x = 12,266.10 × 4,721.40
  4. Step 4: Simplify right side
    8,188.20x = 57,913,164.54
  5. Step 5: Solve for x
    x = 57,913,164.54/8,188.20
  6. Step 6: Final answer
    x = 7,072.76

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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.