Home / 5,315.37-7,972.57-1,618.41

Finding the Fourth Proportional to 5,315.37, 7,972.57 and 1,618.41

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Solution

The fourth proportional to 5,315.37, 7,972.57 and 1,618.41 is: 2,427.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.37 : 7,972.57 = 1,618.41 : x
  2. Step 2: Convert to fraction form
    5,315.37/7,972.57 = 1,618.41/x
  3. Step 3: Cross multiply
    5,315.37x = 7,972.57 × 1,618.41
  4. Step 4: Simplify right side
    5,315.37x = 12,902,887.01
  5. Step 5: Solve for x
    x = 12,902,887.01/5,315.37
  6. Step 6: Final answer
    x = 2,427.47

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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.