Home / 1,424.08-2,136.27-499.77

Finding the Fourth Proportional to 1,424.08, 2,136.27 and 499.77

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Solution

The fourth proportional to 1,424.08, 2,136.27 and 499.77 is: 749.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.08 : 2,136.27 = 499.77 : x
  2. Step 2: Convert to fraction form
    1,424.08/2,136.27 = 499.77/x
  3. Step 3: Cross multiply
    1,424.08x = 2,136.27 × 499.77
  4. Step 4: Simplify right side
    1,424.08x = 1,067,645.53
  5. Step 5: Solve for x
    x = 1,067,645.53/1,424.08
  6. Step 6: Final answer
    x = 749.71

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1.5x scale

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.