Home / 3,159.20-4,738.80-2,856.80

Finding the Fourth Proportional to 3,159.20, 4,738.80 and 2,856.80

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Solution

The fourth proportional to 3,159.20, 4,738.80 and 2,856.80 is: 4,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.20 : 4,738.80 = 2,856.80 : x
  2. Step 2: Convert to fraction form
    3,159.20/4,738.80 = 2,856.80/x
  3. Step 3: Cross multiply
    3,159.20x = 4,738.80 × 2,856.80
  4. Step 4: Simplify right side
    3,159.20x = 13,537,803.84
  5. Step 5: Solve for x
    x = 13,537,803.84/3,159.20
  6. Step 6: Final answer
    x = 4,285.20

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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.