Home / 4,214.80-6,311.40-3,113.20

Finding the Fourth Proportional to 4,214.80, 6,311.40 and 3,113.20

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Solution

The fourth proportional to 4,214.80, 6,311.40 and 3,113.20 is: 4,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,214.80 : 6,311.40 = 3,113.20 : x
  2. Step 2: Convert to fraction form
    4,214.80/6,311.40 = 3,113.20/x
  3. Step 3: Cross multiply
    4,214.80x = 6,311.40 × 3,113.20
  4. Step 4: Simplify right side
    4,214.80x = 19,648,650.48
  5. Step 5: Solve for x
    x = 19,648,650.48/4,214.80
  6. Step 6: Final answer
    x = 4,661.82

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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.