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Finding the Fourth Proportional to 8,641.04, 12,961.60 and 4,743.32

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Solution

The fourth proportional to 8,641.04, 12,961.60 and 4,743.32 is: 7,115.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.04 : 12,961.60 = 4,743.32 : x
  2. Step 2: Convert to fraction form
    8,641.04/12,961.60 = 4,743.32/x
  3. Step 3: Cross multiply
    8,641.04x = 12,961.60 × 4,743.32
  4. Step 4: Simplify right side
    8,641.04x = 61,481,016.51
  5. Step 5: Solve for x
    x = 61,481,016.51/8,641.04
  6. Step 6: Final answer
    x = 7,115.00

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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.