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Finding the Fourth Proportional to 8,886.80, 13,323.80 and 4,992.40

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Solution

The fourth proportional to 8,886.80, 13,323.80 and 4,992.40 is: 7,485.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.80 : 13,323.80 = 4,992.40 : x
  2. Step 2: Convert to fraction form
    8,886.80/13,323.80 = 4,992.40/x
  3. Step 3: Cross multiply
    8,886.80x = 13,323.80 × 4,992.40
  4. Step 4: Simplify right side
    8,886.80x = 66,517,739.12
  5. Step 5: Solve for x
    x = 66,517,739.12/8,886.80
  6. Step 6: Final answer
    x = 7,485.00

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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.