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Finding the Fourth Proportional to 6,887.80, 10,328.22 and 2,990.44

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Solution

The fourth proportional to 6,887.80, 10,328.22 and 2,990.44 is: 4,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,887.80 : 10,328.22 = 2,990.44 : x
  2. Step 2: Convert to fraction form
    6,887.80/10,328.22 = 2,990.44/x
  3. Step 3: Cross multiply
    6,887.80x = 10,328.22 × 2,990.44
  4. Step 4: Simplify right side
    6,887.80x = 30,885,922.22
  5. Step 5: Solve for x
    x = 30,885,922.22/6,887.80
  6. Step 6: Final answer
    x = 4,484.15

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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.