Home / 9,015.60-13,523.40-3,172.80

Finding the Fourth Proportional to 9,015.60, 13,523.40 and 3,172.80

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Solution

The fourth proportional to 9,015.60, 13,523.40 and 3,172.80 is: 4,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,015.60 : 13,523.40 = 3,172.80 : x
  2. Step 2: Convert to fraction form
    9,015.60/13,523.40 = 3,172.80/x
  3. Step 3: Cross multiply
    9,015.60x = 13,523.40 × 3,172.80
  4. Step 4: Simplify right side
    9,015.60x = 42,907,043.52
  5. Step 5: Solve for x
    x = 42,907,043.52/9,015.60
  6. Step 6: Final answer
    x = 4,759.20

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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.