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Finding the Fourth Proportional to 8,462.68, 11,678.11 and 4,685.58

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Solution

The fourth proportional to 8,462.68, 11,678.11 and 4,685.58 is: 6,465.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,462.68 : 11,678.11 = 4,685.58 : x
  2. Step 2: Convert to fraction form
    8,462.68/11,678.11 = 4,685.58/x
  3. Step 3: Cross multiply
    8,462.68x = 11,678.11 × 4,685.58
  4. Step 4: Simplify right side
    8,462.68x = 54,718,718.65
  5. Step 5: Solve for x
    x = 54,718,718.65/8,462.68
  6. Step 6: Final answer
    x = 6,465.89

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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.