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Finding the Fourth Proportional to 8,699.75, 12,001.16 and 5,507.64

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Solution

The fourth proportional to 8,699.75, 12,001.16 and 5,507.64 is: 7,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.75 : 12,001.16 = 5,507.64 : x
  2. Step 2: Convert to fraction form
    8,699.75/12,001.16 = 5,507.64/x
  3. Step 3: Cross multiply
    8,699.75x = 12,001.16 × 5,507.64
  4. Step 4: Simplify right side
    8,699.75x = 66,098,082.63
  5. Step 5: Solve for x
    x = 66,098,082.63/8,699.75
  6. Step 6: Final answer
    x = 7,597.70

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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.