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Finding the Fourth Proportional to 8,364.71, 12,547.22 and 3,981.29

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Solution

The fourth proportional to 8,364.71, 12,547.22 and 3,981.29 is: 5,972.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.71 : 12,547.22 = 3,981.29 : x
  2. Step 2: Convert to fraction form
    8,364.71/12,547.22 = 3,981.29/x
  3. Step 3: Cross multiply
    8,364.71x = 12,547.22 × 3,981.29
  4. Step 4: Simplify right side
    8,364.71x = 49,954,132.98
  5. Step 5: Solve for x
    x = 49,954,132.98/8,364.71
  6. Step 6: Final answer
    x = 5,972.01

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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.