Home / 5,359.20-8,031.60-3,818.40

Finding the Fourth Proportional to 5,359.20, 8,031.60 and 3,818.40

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Solution

The fourth proportional to 5,359.20, 8,031.60 and 3,818.40 is: 5,722.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,359.20 : 8,031.60 = 3,818.40 : x
  2. Step 2: Convert to fraction form
    5,359.20/8,031.60 = 3,818.40/x
  3. Step 3: Cross multiply
    5,359.20x = 8,031.60 × 3,818.40
  4. Step 4: Simplify right side
    5,359.20x = 30,667,861.44
  5. Step 5: Solve for x
    x = 30,667,861.44/5,359.20
  6. Step 6: Final answer
    x = 5,722.47

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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.