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Finding the Fourth Proportional to 8,992.76, 12,395.58 and 5,449.28

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Solution

The fourth proportional to 8,992.76, 12,395.58 and 5,449.28 is: 7,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.76 : 12,395.58 = 5,449.28 : x
  2. Step 2: Convert to fraction form
    8,992.76/12,395.58 = 5,449.28/x
  3. Step 3: Cross multiply
    8,992.76x = 12,395.58 × 5,449.28
  4. Step 4: Simplify right side
    8,992.76x = 67,546,986.18
  5. Step 5: Solve for x
    x = 67,546,986.18/8,992.76
  6. Step 6: Final answer
    x = 7,511.26

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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.