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Finding the Fourth Proportional to 8,547.06, 12,811.83 and 3,280.65

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Solution

The fourth proportional to 8,547.06, 12,811.83 and 3,280.65 is: 4,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.06 : 12,811.83 = 3,280.65 : x
  2. Step 2: Convert to fraction form
    8,547.06/12,811.83 = 3,280.65/x
  3. Step 3: Cross multiply
    8,547.06x = 12,811.83 × 3,280.65
  4. Step 4: Simplify right side
    8,547.06x = 42,031,130.09
  5. Step 5: Solve for x
    x = 42,031,130.09/8,547.06
  6. Step 6: Final answer
    x = 4,917.61

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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.