Home / 1,423.91-2,135.57-436.56

Finding the Fourth Proportional to 1,423.91, 2,135.57 and 436.56

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Solution

The fourth proportional to 1,423.91, 2,135.57 and 436.56 is: 654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.91 : 2,135.57 = 436.56 : x
  2. Step 2: Convert to fraction form
    1,423.91/2,135.57 = 436.56/x
  3. Step 3: Cross multiply
    1,423.91x = 2,135.57 × 436.56
  4. Step 4: Simplify right side
    1,423.91x = 932,304.44
  5. Step 5: Solve for x
    x = 932,304.44/1,423.91
  6. Step 6: Final answer
    x = 654.75

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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.