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Finding the Fourth Proportional to 9,243.70, 13,777.72 and 8,718.30

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Solution

The fourth proportional to 9,243.70, 13,777.72 and 8,718.30 is: 12,994.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,243.70 : 13,777.72 = 8,718.30 : x
  2. Step 2: Convert to fraction form
    9,243.70/13,777.72 = 8,718.30/x
  3. Step 3: Cross multiply
    9,243.70x = 13,777.72 × 8,718.30
  4. Step 4: Simplify right side
    9,243.70x = 120,118,274.48
  5. Step 5: Solve for x
    x = 120,118,274.48/9,243.70
  6. Step 6: Final answer
    x = 12,994.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.