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Finding the Fourth Proportional to 6,644.40, 9,888.17 and 6,422.94

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Solution

The fourth proportional to 6,644.40, 9,888.17 and 6,422.94 is: 9,558.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644.40 : 9,888.17 = 6,422.94 : x
  2. Step 2: Convert to fraction form
    6,644.40/9,888.17 = 6,422.94/x
  3. Step 3: Cross multiply
    6,644.40x = 9,888.17 × 6,422.94
  4. Step 4: Simplify right side
    6,644.40x = 63,511,090.51
  5. Step 5: Solve for x
    x = 63,511,090.51/6,644.40
  6. Step 6: Final answer
    x = 9,558.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.