Home / 7,916.40-11,875.21-2,651.43

Finding the Fourth Proportional to 7,916.40, 11,875.21 and 2,651.43

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Solution

The fourth proportional to 7,916.40, 11,875.21 and 2,651.43 is: 3,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.40 : 11,875.21 = 2,651.43 : x
  2. Step 2: Convert to fraction form
    7,916.40/11,875.21 = 2,651.43/x
  3. Step 3: Cross multiply
    7,916.40x = 11,875.21 × 2,651.43
  4. Step 4: Simplify right side
    7,916.40x = 31,486,288.05
  5. Step 5: Solve for x
    x = 31,486,288.05/7,916.40
  6. Step 6: Final answer
    x = 3,977.35

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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.