Home / 8,921.48-12,311.28-4,942.76

Finding the Fourth Proportional to 8,921.48, 12,311.28 and 4,942.76

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Solution

The fourth proportional to 8,921.48, 12,311.28 and 4,942.76 is: 6,820.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.48 : 12,311.28 = 4,942.76 : x
  2. Step 2: Convert to fraction form
    8,921.48/12,311.28 = 4,942.76/x
  3. Step 3: Cross multiply
    8,921.48x = 12,311.28 × 4,942.76
  4. Step 4: Simplify right side
    8,921.48x = 60,851,702.33
  5. Step 5: Solve for x
    x = 60,851,702.33/8,921.48
  6. Step 6: Final answer
    x = 6,820.81

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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.