Home / 8,272.54-12,398.28-3,880.34

Finding the Fourth Proportional to 8,272.54, 12,398.28 and 3,880.34

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Solution

The fourth proportional to 8,272.54, 12,398.28 and 3,880.34 is: 5,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.54 : 12,398.28 = 3,880.34 : x
  2. Step 2: Convert to fraction form
    8,272.54/12,398.28 = 3,880.34/x
  3. Step 3: Cross multiply
    8,272.54x = 12,398.28 × 3,880.34
  4. Step 4: Simplify right side
    8,272.54x = 48,109,541.82
  5. Step 5: Solve for x
    x = 48,109,541.82/8,272.54
  6. Step 6: Final answer
    x = 5,815.57

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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.