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Finding the Fourth Proportional to 9,966, 13,753.08 and 5,776.68

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Solution

The fourth proportional to 9,966, 13,753.08 and 5,776.68 is: 7,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966 : 13,753.08 = 5,776.68 : x
  2. Step 2: Convert to fraction form
    9,966/13,753.08 = 5,776.68/x
  3. Step 3: Cross multiply
    9,966x = 13,753.08 × 5,776.68
  4. Step 4: Simplify right side
    9,966x = 79,447,142.17
  5. Step 5: Solve for x
    x = 79,447,142.17/9,966
  6. Step 6: Final answer
    x = 7,971.82

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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.