Home / 8,570.20-12,855.30-3,953.20

Finding the Fourth Proportional to 8,570.20, 12,855.30 and 3,953.20

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Solution

The fourth proportional to 8,570.20, 12,855.30 and 3,953.20 is: 5,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.20 : 12,855.30 = 3,953.20 : x
  2. Step 2: Convert to fraction form
    8,570.20/12,855.30 = 3,953.20/x
  3. Step 3: Cross multiply
    8,570.20x = 12,855.30 × 3,953.20
  4. Step 4: Simplify right side
    8,570.20x = 50,819,571.96
  5. Step 5: Solve for x
    x = 50,819,571.96/8,570.20
  6. Step 6: Final answer
    x = 5,929.80

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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.