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Finding the Fourth Proportional to 8,700.65, 12,006.83 and 4,923.82

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Solution

The fourth proportional to 8,700.65, 12,006.83 and 4,923.82 is: 6,794.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.65 : 12,006.83 = 4,923.82 : x
  2. Step 2: Convert to fraction form
    8,700.65/12,006.83 = 4,923.82/x
  3. Step 3: Cross multiply
    8,700.65x = 12,006.83 × 4,923.82
  4. Step 4: Simplify right side
    8,700.65x = 59,119,497.01
  5. Step 5: Solve for x
    x = 59,119,497.01/8,700.65
  6. Step 6: Final answer
    x = 6,794.84

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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.