Home / 5,237.20-7,855.80-2,159.20

Finding the Fourth Proportional to 5,237.20, 7,855.80 and 2,159.20

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Solution

The fourth proportional to 5,237.20, 7,855.80 and 2,159.20 is: 3,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,237.20 : 7,855.80 = 2,159.20 : x
  2. Step 2: Convert to fraction form
    5,237.20/7,855.80 = 2,159.20/x
  3. Step 3: Cross multiply
    5,237.20x = 7,855.80 × 2,159.20
  4. Step 4: Simplify right side
    5,237.20x = 16,962,243.36
  5. Step 5: Solve for x
    x = 16,962,243.36/5,237.20
  6. Step 6: Final answer
    x = 3,238.80

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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.