Home / 7,918.60-11,871.90-4,025.80

Finding the Fourth Proportional to 7,918.60, 11,871.90 and 4,025.80

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Solution

The fourth proportional to 7,918.60, 11,871.90 and 4,025.80 is: 6,035.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.60 : 11,871.90 = 4,025.80 : x
  2. Step 2: Convert to fraction form
    7,918.60/11,871.90 = 4,025.80/x
  3. Step 3: Cross multiply
    7,918.60x = 11,871.90 × 4,025.80
  4. Step 4: Simplify right side
    7,918.60x = 47,793,895.02
  5. Step 5: Solve for x
    x = 47,793,895.02/7,918.60
  6. Step 6: Final answer
    x = 6,035.65

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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.