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Finding the Fourth Proportional to 8,829.84, 13,240.64 and 5,133.12

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Solution

The fourth proportional to 8,829.84, 13,240.64 and 5,133.12 is: 7,697.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,829.84 : 13,240.64 = 5,133.12 : x
  2. Step 2: Convert to fraction form
    8,829.84/13,240.64 = 5,133.12/x
  3. Step 3: Cross multiply
    8,829.84x = 13,240.64 × 5,133.12
  4. Step 4: Simplify right side
    8,829.84x = 67,965,794.00
  5. Step 5: Solve for x
    x = 67,965,794.00/8,829.84
  6. Step 6: Final answer
    x = 7,697.28

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1.5x scale

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.