Home / 8,220.08-11,340.93-4,680.78

Finding the Fourth Proportional to 8,220.08, 11,340.93 and 4,680.78

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Solution

The fourth proportional to 8,220.08, 11,340.93 and 4,680.78 is: 6,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.08 : 11,340.93 = 4,680.78 : x
  2. Step 2: Convert to fraction form
    8,220.08/11,340.93 = 4,680.78/x
  3. Step 3: Cross multiply
    8,220.08x = 11,340.93 × 4,680.78
  4. Step 4: Simplify right side
    8,220.08x = 53,084,398.33
  5. Step 5: Solve for x
    x = 53,084,398.33/8,220.08
  6. Step 6: Final answer
    x = 6,457.90

Related Problems

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Half scale
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Double scale
Find fourth proportional to 8,221.08, 11,342.31 and 4,681.78
Similar ratio
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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.