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Finding the Fourth Proportional to 6,990.03, 9,649.81 and 5,393.09

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Solution

The fourth proportional to 6,990.03, 9,649.81 and 5,393.09 is: 7,445.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.03 : 9,649.81 = 5,393.09 : x
  2. Step 2: Convert to fraction form
    6,990.03/9,649.81 = 5,393.09/x
  3. Step 3: Cross multiply
    6,990.03x = 9,649.81 × 5,393.09
  4. Step 4: Simplify right side
    6,990.03x = 52,042,232.08
  5. Step 5: Solve for x
    x = 52,042,232.08/6,990.03
  6. Step 6: Final answer
    x = 7,445.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.