Home / 8,221.30-11,345.86-4,685.62

Finding the Fourth Proportional to 8,221.30, 11,345.86 and 4,685.62

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Solution

The fourth proportional to 8,221.30, 11,345.86 and 4,685.62 is: 6,466.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.30 : 11,345.86 = 4,685.62 : x
  2. Step 2: Convert to fraction form
    8,221.30/11,345.86 = 4,685.62/x
  3. Step 3: Cross multiply
    8,221.30x = 11,345.86 × 4,685.62
  4. Step 4: Simplify right side
    8,221.30x = 53,162,388.53
  5. Step 5: Solve for x
    x = 53,162,388.53/8,221.30
  6. Step 6: Final answer
    x = 6,466.42

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Half scale
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Double scale
Find fourth proportional to 8,222.30, 11,347.24 and 4,686.62
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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.