Home / 2,423.80-3,635.10-668.72

Finding the Fourth Proportional to 2,423.80, 3,635.10 and 668.72

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Solution

The fourth proportional to 2,423.80, 3,635.10 and 668.72 is: 1,002.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,423.80 : 3,635.10 = 668.72 : x
  2. Step 2: Convert to fraction form
    2,423.80/3,635.10 = 668.72/x
  3. Step 3: Cross multiply
    2,423.80x = 3,635.10 × 668.72
  4. Step 4: Simplify right side
    2,423.80x = 2,430,859.53
  5. Step 5: Solve for x
    x = 2,430,859.53/2,423.80
  6. Step 6: Final answer
    x = 1,002.91

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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.