Home / 8,106.78-12,165.03-2,913.06

Finding the Fourth Proportional to 8,106.78, 12,165.03 and 2,913.06

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Solution

The fourth proportional to 8,106.78, 12,165.03 and 2,913.06 is: 4,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.78 : 12,165.03 = 2,913.06 : x
  2. Step 2: Convert to fraction form
    8,106.78/12,165.03 = 2,913.06/x
  3. Step 3: Cross multiply
    8,106.78x = 12,165.03 × 2,913.06
  4. Step 4: Simplify right side
    8,106.78x = 35,437,462.29
  5. Step 5: Solve for x
    x = 35,437,462.29/8,106.78
  6. Step 6: Final answer
    x = 4,371.34

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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.