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Finding the Fourth Proportional to 9,379.62, 14,070.16 and 3,139.65

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Solution

The fourth proportional to 9,379.62, 14,070.16 and 3,139.65 is: 4,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.62 : 14,070.16 = 3,139.65 : x
  2. Step 2: Convert to fraction form
    9,379.62/14,070.16 = 3,139.65/x
  3. Step 3: Cross multiply
    9,379.62x = 14,070.16 × 3,139.65
  4. Step 4: Simplify right side
    9,379.62x = 44,175,374.94
  5. Step 5: Solve for x
    x = 44,175,374.94/9,379.62
  6. Step 6: Final answer
    x = 4,709.72

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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.