Home / 7,851.56-11,781.37-4,340.91

Finding the Fourth Proportional to 7,851.56, 11,781.37 and 4,340.91

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Solution

The fourth proportional to 7,851.56, 11,781.37 and 4,340.91 is: 6,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.56 : 11,781.37 = 4,340.91 : x
  2. Step 2: Convert to fraction form
    7,851.56/11,781.37 = 4,340.91/x
  3. Step 3: Cross multiply
    7,851.56x = 11,781.37 × 4,340.91
  4. Step 4: Simplify right side
    7,851.56x = 51,141,866.85
  5. Step 5: Solve for x
    x = 51,141,866.85/7,851.56
  6. Step 6: Final answer
    x = 6,513.60

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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.