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Finding the Fourth Proportional to 8,616.87, 12,914.28 and 7,501.74

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Solution

The fourth proportional to 8,616.87, 12,914.28 and 7,501.74 is: 11,243.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.87 : 12,914.28 = 7,501.74 : x
  2. Step 2: Convert to fraction form
    8,616.87/12,914.28 = 7,501.74/x
  3. Step 3: Cross multiply
    8,616.87x = 12,914.28 × 7,501.74
  4. Step 4: Simplify right side
    8,616.87x = 96,879,570.85
  5. Step 5: Solve for x
    x = 96,879,570.85/8,616.87
  6. Step 6: Final answer
    x = 11,243.01

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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.