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Finding the Fourth Proportional to 8,494.72, 12,746.67 and 4,991.57

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Solution

The fourth proportional to 8,494.72, 12,746.67 and 4,991.57 is: 7,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,494.72 : 12,746.67 = 4,991.57 : x
  2. Step 2: Convert to fraction form
    8,494.72/12,746.67 = 4,991.57/x
  3. Step 3: Cross multiply
    8,494.72x = 12,746.67 × 4,991.57
  4. Step 4: Simplify right side
    8,494.72x = 63,625,924.65
  5. Step 5: Solve for x
    x = 63,625,924.65/8,494.72
  6. Step 6: Final answer
    x = 7,490.05

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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.