Home / 7,816.10-11,728.70-2,889.17

Finding the Fourth Proportional to 7,816.10, 11,728.70 and 2,889.17

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Solution

The fourth proportional to 7,816.10, 11,728.70 and 2,889.17 is: 4,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.10 : 11,728.70 = 2,889.17 : x
  2. Step 2: Convert to fraction form
    7,816.10/11,728.70 = 2,889.17/x
  3. Step 3: Cross multiply
    7,816.10x = 11,728.70 × 2,889.17
  4. Step 4: Simplify right side
    7,816.10x = 33,886,189.91
  5. Step 5: Solve for x
    x = 33,886,189.91/7,816.10
  6. Step 6: Final answer
    x = 4,335.44

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.