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Finding the Fourth Proportional to 8,989.44, 12,404.48 and 5,009.80

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Solution

The fourth proportional to 8,989.44, 12,404.48 and 5,009.80 is: 6,913.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.44 : 12,404.48 = 5,009.80 : x
  2. Step 2: Convert to fraction form
    8,989.44/12,404.48 = 5,009.80/x
  3. Step 3: Cross multiply
    8,989.44x = 12,404.48 × 5,009.80
  4. Step 4: Simplify right side
    8,989.44x = 62,143,963.90
  5. Step 5: Solve for x
    x = 62,143,963.90/8,989.44
  6. Step 6: Final answer
    x = 6,913.00

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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.