Home / 7,918.02-11,878.25-2,651.40

Finding the Fourth Proportional to 7,918.02, 11,878.25 and 2,651.40

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Solution

The fourth proportional to 7,918.02, 11,878.25 and 2,651.40 is: 3,977.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.02 : 11,878.25 = 2,651.40 : x
  2. Step 2: Convert to fraction form
    7,918.02/11,878.25 = 2,651.40/x
  3. Step 3: Cross multiply
    7,918.02x = 11,878.25 × 2,651.40
  4. Step 4: Simplify right side
    7,918.02x = 31,493,978.79
  5. Step 5: Solve for x
    x = 31,493,978.79/7,918.02
  6. Step 6: Final answer
    x = 3,977.51

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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.