Home / 8,215.16-11,336.99-4,678.58

Finding the Fourth Proportional to 8,215.16, 11,336.99 and 4,678.58

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Solution

The fourth proportional to 8,215.16, 11,336.99 and 4,678.58 is: 6,456.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.16 : 11,336.99 = 4,678.58 : x
  2. Step 2: Convert to fraction form
    8,215.16/11,336.99 = 4,678.58/x
  3. Step 3: Cross multiply
    8,215.16x = 11,336.99 × 4,678.58
  4. Step 4: Simplify right side
    8,215.16x = 53,041,019.62
  5. Step 5: Solve for x
    x = 53,041,019.62/8,215.16
  6. Step 6: Final answer
    x = 6,456.48

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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.