Home / 5,015.20-7,522.80-4,928.80

Finding the Fourth Proportional to 5,015.20, 7,522.80 and 4,928.80

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Solution

The fourth proportional to 5,015.20, 7,522.80 and 4,928.80 is: 7,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.20 : 7,522.80 = 4,928.80 : x
  2. Step 2: Convert to fraction form
    5,015.20/7,522.80 = 4,928.80/x
  3. Step 3: Cross multiply
    5,015.20x = 7,522.80 × 4,928.80
  4. Step 4: Simplify right side
    5,015.20x = 37,078,376.64
  5. Step 5: Solve for x
    x = 37,078,376.64/5,015.20
  6. Step 6: Final answer
    x = 7,393.20

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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.