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Finding the Fourth Proportional to 8,783.92, 13,225.64 and 7,750.72

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Solution

The fourth proportional to 8,783.92, 13,225.64 and 7,750.72 is: 11,669.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.92 : 13,225.64 = 7,750.72 : x
  2. Step 2: Convert to fraction form
    8,783.92/13,225.64 = 7,750.72/x
  3. Step 3: Cross multiply
    8,783.92x = 13,225.64 × 7,750.72
  4. Step 4: Simplify right side
    8,783.92x = 102,508,232.46
  5. Step 5: Solve for x
    x = 102,508,232.46/8,783.92
  6. Step 6: Final answer
    x = 11,669.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.