Home / 5,461.52-8,190.78-2,129.24

Finding the Fourth Proportional to 5,461.52, 8,190.78 and 2,129.24

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Solution

The fourth proportional to 5,461.52, 8,190.78 and 2,129.24 is: 3,193.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,461.52 : 8,190.78 = 2,129.24 : x
  2. Step 2: Convert to fraction form
    5,461.52/8,190.78 = 2,129.24/x
  3. Step 3: Cross multiply
    5,461.52x = 8,190.78 × 2,129.24
  4. Step 4: Simplify right side
    5,461.52x = 17,440,136.41
  5. Step 5: Solve for x
    x = 17,440,136.41/5,461.52
  6. Step 6: Final answer
    x = 3,193.28

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Half scale
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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.