Home / 1,524.36-2,286.60-428.70

Finding the Fourth Proportional to 1,524.36, 2,286.60 and 428.70

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Solution

The fourth proportional to 1,524.36, 2,286.60 and 428.70 is: 643.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,524.36 : 2,286.60 = 428.70 : x
  2. Step 2: Convert to fraction form
    1,524.36/2,286.60 = 428.70/x
  3. Step 3: Cross multiply
    1,524.36x = 2,286.60 × 428.70
  4. Step 4: Simplify right side
    1,524.36x = 980,265.42
  5. Step 5: Solve for x
    x = 980,265.42/1,524.36
  6. Step 6: Final answer
    x = 643.07

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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.