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Finding the Fourth Proportional to 6,644.51, 9,907.19 and 6,404.40

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Solution

The fourth proportional to 6,644.51, 9,907.19 and 6,404.40 is: 9,549.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644.51 : 9,907.19 = 6,404.40 : x
  2. Step 2: Convert to fraction form
    6,644.51/9,907.19 = 6,404.40/x
  3. Step 3: Cross multiply
    6,644.51x = 9,907.19 × 6,404.40
  4. Step 4: Simplify right side
    6,644.51x = 63,449,575.61
  5. Step 5: Solve for x
    x = 63,449,575.61/6,644.51
  6. Step 6: Final answer
    x = 9,549.17

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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.