Home / 8,130.20-11,219.78-4,545.54

Finding the Fourth Proportional to 8,130.20, 11,219.78 and 4,545.54

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Solution

The fourth proportional to 8,130.20, 11,219.78 and 4,545.54 is: 6,272.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.20 : 11,219.78 = 4,545.54 : x
  2. Step 2: Convert to fraction form
    8,130.20/11,219.78 = 4,545.54/x
  3. Step 3: Cross multiply
    8,130.20x = 11,219.78 × 4,545.54
  4. Step 4: Simplify right side
    8,130.20x = 50,999,970.15
  5. Step 5: Solve for x
    x = 50,999,970.15/8,130.20
  6. Step 6: Final answer
    x = 6,272.91

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.