Home / 7,520.80-11,281.20-4,896.40

Finding the Fourth Proportional to 7,520.80, 11,281.20 and 4,896.40

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Solution

The fourth proportional to 7,520.80, 11,281.20 and 4,896.40 is: 7,344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.80 : 11,281.20 = 4,896.40 : x
  2. Step 2: Convert to fraction form
    7,520.80/11,281.20 = 4,896.40/x
  3. Step 3: Cross multiply
    7,520.80x = 11,281.20 × 4,896.40
  4. Step 4: Simplify right side
    7,520.80x = 55,237,267.68
  5. Step 5: Solve for x
    x = 55,237,267.68/7,520.80
  6. Step 6: Final answer
    x = 7,344.60

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Similar ratio
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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.