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Finding the Fourth Proportional to 8,914.84, 12,303.84 and 5,558.20

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Solution

The fourth proportional to 8,914.84, 12,303.84 and 5,558.20 is: 7,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.84 : 12,303.84 = 5,558.20 : x
  2. Step 2: Convert to fraction form
    8,914.84/12,303.84 = 5,558.20/x
  3. Step 3: Cross multiply
    8,914.84x = 12,303.84 × 5,558.20
  4. Step 4: Simplify right side
    8,914.84x = 68,387,203.49
  5. Step 5: Solve for x
    x = 68,387,203.49/8,914.84
  6. Step 6: Final answer
    x = 7,671.16

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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.