Home / 8,220.03-11,340.87-4,680.74

Finding the Fourth Proportional to 8,220.03, 11,340.87 and 4,680.74

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Solution

The fourth proportional to 8,220.03, 11,340.87 and 4,680.74 is: 6,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.03 : 11,340.87 = 4,680.74 : x
  2. Step 2: Convert to fraction form
    8,220.03/11,340.87 = 4,680.74/x
  3. Step 3: Cross multiply
    8,220.03x = 11,340.87 × 4,680.74
  4. Step 4: Simplify right side
    8,220.03x = 53,083,623.79
  5. Step 5: Solve for x
    x = 53,083,623.79/8,220.03
  6. Step 6: Final answer
    x = 6,457.84

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Half scale
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Double scale
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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.