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Finding the Fourth Proportional to 9,777.81, 13,493.30 and 5,529.71

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Solution

The fourth proportional to 9,777.81, 13,493.30 and 5,529.71 is: 7,630.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,777.81 : 13,493.30 = 5,529.71 : x
  2. Step 2: Convert to fraction form
    9,777.81/13,493.30 = 5,529.71/x
  3. Step 3: Cross multiply
    9,777.81x = 13,493.30 × 5,529.71
  4. Step 4: Simplify right side
    9,777.81x = 74,614,009.88
  5. Step 5: Solve for x
    x = 74,614,009.88/9,777.81
  6. Step 6: Final answer
    x = 7,630.95

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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.