Home / 5,418.61-8,131.13-1,956.13

Finding the Fourth Proportional to 5,418.61, 8,131.13 and 1,956.13

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Solution

The fourth proportional to 5,418.61, 8,131.13 and 1,956.13 is: 2,935.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.61 : 8,131.13 = 1,956.13 : x
  2. Step 2: Convert to fraction form
    5,418.61/8,131.13 = 1,956.13/x
  3. Step 3: Cross multiply
    5,418.61x = 8,131.13 × 1,956.13
  4. Step 4: Simplify right side
    5,418.61x = 15,905,547.33
  5. Step 5: Solve for x
    x = 15,905,547.33/5,418.61
  6. Step 6: Final answer
    x = 2,935.36

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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.