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Finding the Fourth Proportional to 8,602.61, 11,869.79 and 5,622.82

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Solution

The fourth proportional to 8,602.61, 11,869.79 and 5,622.82 is: 7,758.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.61 : 11,869.79 = 5,622.82 : x
  2. Step 2: Convert to fraction form
    8,602.61/11,869.79 = 5,622.82/x
  3. Step 3: Cross multiply
    8,602.61x = 11,869.79 × 5,622.82
  4. Step 4: Simplify right side
    8,602.61x = 66,741,666.45
  5. Step 5: Solve for x
    x = 66,741,666.45/8,602.61
  6. Step 6: Final answer
    x = 7,758.31

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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.