Home / 5,136.24-7,705.40-1,672.56

Finding the Fourth Proportional to 5,136.24, 7,705.40 and 1,672.56

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Solution

The fourth proportional to 5,136.24, 7,705.40 and 1,672.56 is: 2,509.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.24 : 7,705.40 = 1,672.56 : x
  2. Step 2: Convert to fraction form
    5,136.24/7,705.40 = 1,672.56/x
  3. Step 3: Cross multiply
    5,136.24x = 7,705.40 × 1,672.56
  4. Step 4: Simplify right side
    5,136.24x = 12,887,743.82
  5. Step 5: Solve for x
    x = 12,887,743.82/5,136.24
  6. Step 6: Final answer
    x = 2,509.18

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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.