Home / 7,916.90-11,875.96-2,651.93

Finding the Fourth Proportional to 7,916.90, 11,875.96 and 2,651.93

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Solution

The fourth proportional to 7,916.90, 11,875.96 and 2,651.93 is: 3,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.90 : 11,875.96 = 2,651.93 : x
  2. Step 2: Convert to fraction form
    7,916.90/11,875.96 = 2,651.93/x
  3. Step 3: Cross multiply
    7,916.90x = 11,875.96 × 2,651.93
  4. Step 4: Simplify right side
    7,916.90x = 31,494,214.60
  5. Step 5: Solve for x
    x = 31,494,214.60/7,916.90
  6. Step 6: Final answer
    x = 3,978.10

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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.