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Finding the Fourth Proportional to 8,960.65, 12,362.81 and 4,981.00

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Solution

The fourth proportional to 8,960.65, 12,362.81 and 4,981.00 is: 6,872.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.65 : 12,362.81 = 4,981.00 : x
  2. Step 2: Convert to fraction form
    8,960.65/12,362.81 = 4,981.00/x
  3. Step 3: Cross multiply
    8,960.65x = 12,362.81 × 4,981.00
  4. Step 4: Simplify right side
    8,960.65x = 61,579,134.93
  5. Step 5: Solve for x
    x = 61,579,134.93/8,960.65
  6. Step 6: Final answer
    x = 6,872.17

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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.