Home / 7,221.06-10,830.30-5,134.80

Finding the Fourth Proportional to 7,221.06, 10,830.30 and 5,134.80

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Solution

The fourth proportional to 7,221.06, 10,830.30 and 5,134.80 is: 7,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.06 : 10,830.30 = 5,134.80 : x
  2. Step 2: Convert to fraction form
    7,221.06/10,830.30 = 5,134.80/x
  3. Step 3: Cross multiply
    7,221.06x = 10,830.30 × 5,134.80
  4. Step 4: Simplify right side
    7,221.06x = 55,611,424.44
  5. Step 5: Solve for x
    x = 55,611,424.44/7,221.06
  6. Step 6: Final answer
    x = 7,701.28

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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.