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Finding the Fourth Proportional to 8,985.69, 13,487.94 and 4,309.65

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Solution

The fourth proportional to 8,985.69, 13,487.94 and 4,309.65 is: 6,468.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.69 : 13,487.94 = 4,309.65 : x
  2. Step 2: Convert to fraction form
    8,985.69/13,487.94 = 4,309.65/x
  3. Step 3: Cross multiply
    8,985.69x = 13,487.94 × 4,309.65
  4. Step 4: Simplify right side
    8,985.69x = 58,128,300.62
  5. Step 5: Solve for x
    x = 58,128,300.62/8,985.69
  6. Step 6: Final answer
    x = 6,468.99

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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.