Home / 1,619.27-2,428.81-523.55

Finding the Fourth Proportional to 1,619.27, 2,428.81 and 523.55

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Solution

The fourth proportional to 1,619.27, 2,428.81 and 523.55 is: 785.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.27 : 2,428.81 = 523.55 : x
  2. Step 2: Convert to fraction form
    1,619.27/2,428.81 = 523.55/x
  3. Step 3: Cross multiply
    1,619.27x = 2,428.81 × 523.55
  4. Step 4: Simplify right side
    1,619.27x = 1,271,590.02
  5. Step 5: Solve for x
    x = 1,271,590.02/1,619.27
  6. Step 6: Final answer
    x = 785.28

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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.