Home / 1,619.55-2,429.70-523.87

Finding the Fourth Proportional to 1,619.55, 2,429.70 and 523.87

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Solution

The fourth proportional to 1,619.55, 2,429.70 and 523.87 is: 785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.55 : 2,429.70 = 523.87 : x
  2. Step 2: Convert to fraction form
    1,619.55/2,429.70 = 523.87/x
  3. Step 3: Cross multiply
    1,619.55x = 2,429.70 × 523.87
  4. Step 4: Simplify right side
    1,619.55x = 1,272,834.79
  5. Step 5: Solve for x
    x = 1,272,834.79/1,619.55
  6. Step 6: Final answer
    x = 785.92

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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.