Home / 7,701.80-11,541.90-5,390.60

Finding the Fourth Proportional to 7,701.80, 11,541.90 and 5,390.60

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Solution

The fourth proportional to 7,701.80, 11,541.90 and 5,390.60 is: 8,078.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,701.80 : 11,541.90 = 5,390.60 : x
  2. Step 2: Convert to fraction form
    7,701.80/11,541.90 = 5,390.60/x
  3. Step 3: Cross multiply
    7,701.80x = 11,541.90 × 5,390.60
  4. Step 4: Simplify right side
    7,701.80x = 62,217,766.14
  5. Step 5: Solve for x
    x = 62,217,766.14/7,701.80
  6. Step 6: Final answer
    x = 8,078.34

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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.