Home / 5,177.40-7,766.00-1,281.80

Finding the Fourth Proportional to 5,177.40, 7,766.00 and 1,281.80

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Solution

The fourth proportional to 5,177.40, 7,766.00 and 1,281.80 is: 1,922.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.40 : 7,766.00 = 1,281.80 : x
  2. Step 2: Convert to fraction form
    5,177.40/7,766.00 = 1,281.80/x
  3. Step 3: Cross multiply
    5,177.40x = 7,766.00 × 1,281.80
  4. Step 4: Simplify right side
    5,177.40x = 9,954,452.39
  5. Step 5: Solve for x
    x = 9,954,452.39/5,177.40
  6. Step 6: Final answer
    x = 1,922.68

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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.