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Finding the Fourth Proportional to 6,666.77, 9,991.49 and 2,713.42

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Solution

The fourth proportional to 6,666.77, 9,991.49 and 2,713.42 is: 4,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.77 : 9,991.49 = 2,713.42 : x
  2. Step 2: Convert to fraction form
    6,666.77/9,991.49 = 2,713.42/x
  3. Step 3: Cross multiply
    6,666.77x = 9,991.49 × 2,713.42
  4. Step 4: Simplify right side
    6,666.77x = 27,111,058.84
  5. Step 5: Solve for x
    x = 27,111,058.84/6,666.77
  6. Step 6: Final answer
    x = 4,066.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.