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Finding the Fourth Proportional to 8,750.92, 12,074.32 and 5,918.72

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Solution

The fourth proportional to 8,750.92, 12,074.32 and 5,918.72 is: 8,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.92 : 12,074.32 = 5,918.72 : x
  2. Step 2: Convert to fraction form
    8,750.92/12,074.32 = 5,918.72/x
  3. Step 3: Cross multiply
    8,750.92x = 12,074.32 × 5,918.72
  4. Step 4: Simplify right side
    8,750.92x = 71,464,519.27
  5. Step 5: Solve for x
    x = 71,464,519.27/8,750.92
  6. Step 6: Final answer
    x = 8,166.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.