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Finding the Fourth Proportional to 8,606.62, 12,909.30 and 4,897.21

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Solution

The fourth proportional to 8,606.62, 12,909.30 and 4,897.21 is: 7,345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.62 : 12,909.30 = 4,897.21 : x
  2. Step 2: Convert to fraction form
    8,606.62/12,909.30 = 4,897.21/x
  3. Step 3: Cross multiply
    8,606.62x = 12,909.30 × 4,897.21
  4. Step 4: Simplify right side
    8,606.62x = 63,219,553.05
  5. Step 5: Solve for x
    x = 63,219,553.05/8,606.62
  6. Step 6: Final answer
    x = 7,345.46

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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.