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Finding the Fourth Proportional to 8,929.14, 12,322.73 and 5,392.87

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Solution

The fourth proportional to 8,929.14, 12,322.73 and 5,392.87 is: 7,442.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.14 : 12,322.73 = 5,392.87 : x
  2. Step 2: Convert to fraction form
    8,929.14/12,322.73 = 5,392.87/x
  3. Step 3: Cross multiply
    8,929.14x = 12,322.73 × 5,392.87
  4. Step 4: Simplify right side
    8,929.14x = 66,454,880.94
  5. Step 5: Solve for x
    x = 66,454,880.94/8,929.14
  6. Step 6: Final answer
    x = 7,442.47

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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.