Home / 7,916.39-11,875.21-2,651.42

Finding the Fourth Proportional to 7,916.39, 11,875.21 and 2,651.42

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Solution

The fourth proportional to 7,916.39, 11,875.21 and 2,651.42 is: 3,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.39 : 11,875.21 = 2,651.42 : x
  2. Step 2: Convert to fraction form
    7,916.39/11,875.21 = 2,651.42/x
  3. Step 3: Cross multiply
    7,916.39x = 11,875.21 × 2,651.42
  4. Step 4: Simplify right side
    7,916.39x = 31,486,192.36
  5. Step 5: Solve for x
    x = 31,486,192.36/7,916.39
  6. Step 6: Final answer
    x = 3,977.34

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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.