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Finding the Fourth Proportional to 8,699.88, 12,001.36 and 5,507.80

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Solution

The fourth proportional to 8,699.88, 12,001.36 and 5,507.80 is: 7,597.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.88 : 12,001.36 = 5,507.80 : x
  2. Step 2: Convert to fraction form
    8,699.88/12,001.36 = 5,507.80/x
  3. Step 3: Cross multiply
    8,699.88x = 12,001.36 × 5,507.80
  4. Step 4: Simplify right side
    8,699.88x = 66,101,090.61
  5. Step 5: Solve for x
    x = 66,101,090.61/8,699.88
  6. Step 6: Final answer
    x = 7,597.93

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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.