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Finding the Fourth Proportional to 8,784.56, 13,141.85 and 7,628.19

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Solution

The fourth proportional to 8,784.56, 13,141.85 and 7,628.19 is: 11,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.56 : 13,141.85 = 7,628.19 : x
  2. Step 2: Convert to fraction form
    8,784.56/13,141.85 = 7,628.19/x
  3. Step 3: Cross multiply
    8,784.56x = 13,141.85 × 7,628.19
  4. Step 4: Simplify right side
    8,784.56x = 100,248,490.61
  5. Step 5: Solve for x
    x = 100,248,490.61/8,784.56
  6. Step 6: Final answer
    x = 11,411.90

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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.