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Finding the Fourth Proportional to 8,630.02, 11,909.94 and 5,648.38

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Solution

The fourth proportional to 8,630.02, 11,909.94 and 5,648.38 is: 7,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.02 : 11,909.94 = 5,648.38 : x
  2. Step 2: Convert to fraction form
    8,630.02/11,909.94 = 5,648.38/x
  3. Step 3: Cross multiply
    8,630.02x = 11,909.94 × 5,648.38
  4. Step 4: Simplify right side
    8,630.02x = 67,271,866.90
  5. Step 5: Solve for x
    x = 67,271,866.90/8,630.02
  6. Step 6: Final answer
    x = 7,795.10

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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.