Home / 8,386.50-12,579.75-3,192.39

Finding the Fourth Proportional to 8,386.50, 12,579.75 and 3,192.39

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Solution

The fourth proportional to 8,386.50, 12,579.75 and 3,192.39 is: 4,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.50 : 12,579.75 = 3,192.39 : x
  2. Step 2: Convert to fraction form
    8,386.50/12,579.75 = 3,192.39/x
  3. Step 3: Cross multiply
    8,386.50x = 12,579.75 × 3,192.39
  4. Step 4: Simplify right side
    8,386.50x = 40,159,468.10
  5. Step 5: Solve for x
    x = 40,159,468.10/8,386.50
  6. Step 6: Final answer
    x = 4,788.59

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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.