Home / 7,540.48-11,299.38-6,821.20

Finding the Fourth Proportional to 7,540.48, 11,299.38 and 6,821.20

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Solution

The fourth proportional to 7,540.48, 11,299.38 and 6,821.20 is: 10,221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,540.48 : 11,299.38 = 6,821.20 : x
  2. Step 2: Convert to fraction form
    7,540.48/11,299.38 = 6,821.20/x
  3. Step 3: Cross multiply
    7,540.48x = 11,299.38 × 6,821.20
  4. Step 4: Simplify right side
    7,540.48x = 77,075,330.86
  5. Step 5: Solve for x
    x = 77,075,330.86/7,540.48
  6. Step 6: Final answer
    x = 10,221.54

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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.