Home / 8,123.78-11,211.68-4,586.34

Finding the Fourth Proportional to 8,123.78, 11,211.68 and 4,586.34

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Solution

The fourth proportional to 8,123.78, 11,211.68 and 4,586.34 is: 6,329.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.78 : 11,211.68 = 4,586.34 : x
  2. Step 2: Convert to fraction form
    8,123.78/11,211.68 = 4,586.34/x
  3. Step 3: Cross multiply
    8,123.78x = 11,211.68 × 4,586.34
  4. Step 4: Simplify right side
    8,123.78x = 51,420,576.45
  5. Step 5: Solve for x
    x = 51,420,576.45/8,123.78
  6. Step 6: Final answer
    x = 6,329.64

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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.