Home / 4,390.20-6,583.38-1,311.48

Finding the Fourth Proportional to 4,390.20, 6,583.38 and 1,311.48

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Solution

The fourth proportional to 4,390.20, 6,583.38 and 1,311.48 is: 1,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,390.20 : 6,583.38 = 1,311.48 : x
  2. Step 2: Convert to fraction form
    4,390.20/6,583.38 = 1,311.48/x
  3. Step 3: Cross multiply
    4,390.20x = 6,583.38 × 1,311.48
  4. Step 4: Simplify right side
    4,390.20x = 8,633,971.20
  5. Step 5: Solve for x
    x = 8,633,971.20/4,390.20
  6. Step 6: Final answer
    x = 1,966.65

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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.