Home / 9,117.20-13,675.80-5,180.60

Finding the Fourth Proportional to 9,117.20, 13,675.80 and 5,180.60

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Solution

The fourth proportional to 9,117.20, 13,675.80 and 5,180.60 is: 7,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.20 : 13,675.80 = 5,180.60 : x
  2. Step 2: Convert to fraction form
    9,117.20/13,675.80 = 5,180.60/x
  3. Step 3: Cross multiply
    9,117.20x = 13,675.80 × 5,180.60
  4. Step 4: Simplify right side
    9,117.20x = 70,848,849.48
  5. Step 5: Solve for x
    x = 70,848,849.48/9,117.20
  6. Step 6: Final answer
    x = 7,770.90

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1.5x scale

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.