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Finding the Fourth Proportional to 7,916.48, 11,870.02 and 2,650.22

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Solution

The fourth proportional to 7,916.48, 11,870.02 and 2,650.22 is: 3,973.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.48 : 11,870.02 = 2,650.22 : x
  2. Step 2: Convert to fraction form
    7,916.48/11,870.02 = 2,650.22/x
  3. Step 3: Cross multiply
    7,916.48x = 11,870.02 × 2,650.22
  4. Step 4: Simplify right side
    7,916.48x = 31,458,164.40
  5. Step 5: Solve for x
    x = 31,458,164.40/7,916.48
  6. Step 6: Final answer
    x = 3,973.76

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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.