Home / 8,215.68-11,338.20-4,678.20

Finding the Fourth Proportional to 8,215.68, 11,338.20 and 4,678.20

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Solution

The fourth proportional to 8,215.68, 11,338.20 and 4,678.20 is: 6,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.68 : 11,338.20 = 4,678.20 : x
  2. Step 2: Convert to fraction form
    8,215.68/11,338.20 = 4,678.20/x
  3. Step 3: Cross multiply
    8,215.68x = 11,338.20 × 4,678.20
  4. Step 4: Simplify right side
    8,215.68x = 53,042,367.24
  5. Step 5: Solve for x
    x = 53,042,367.24/8,215.68
  6. Step 6: Final answer
    x = 6,456.24

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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.