Home / 3,215.60-4,821.60-1,366.40

Finding the Fourth Proportional to 3,215.60, 4,821.60 and 1,366.40

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Solution

The fourth proportional to 3,215.60, 4,821.60 and 1,366.40 is: 2,048.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.60 : 4,821.60 = 1,366.40 : x
  2. Step 2: Convert to fraction form
    3,215.60/4,821.60 = 1,366.40/x
  3. Step 3: Cross multiply
    3,215.60x = 4,821.60 × 1,366.40
  4. Step 4: Simplify right side
    3,215.60x = 6,588,234.24
  5. Step 5: Solve for x
    x = 6,588,234.24/3,215.60
  6. Step 6: Final answer
    x = 2,048.84

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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.