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Finding the Fourth Proportional to 8,492, 12,678.28 and 7,259.84

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Solution

The fourth proportional to 8,492, 12,678.28 and 7,259.84 is: 10,838.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,492 : 12,678.28 = 7,259.84 : x
  2. Step 2: Convert to fraction form
    8,492/12,678.28 = 7,259.84/x
  3. Step 3: Cross multiply
    8,492x = 12,678.28 × 7,259.84
  4. Step 4: Simplify right side
    8,492x = 92,042,284.28
  5. Step 5: Solve for x
    x = 92,042,284.28/8,492
  6. Step 6: Final answer
    x = 10,838.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.